Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium

Students can Download Chapter 5 Market Equilibrium Questions and Answers, Plus Two Economics Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations

Kerala Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium

Plus Two Economics Market Equilibrium One Mark Questions and Answers

Question 1.
Complete the statement given below. Free entry and of firms imply that the market price will always be equal to ……………
Answer:
Minimum average cost (P = Min. AC)

Question 2.
Choose the correct answer. The imposition of price ceiling below the equilibrium price leads to ……….
Answer:
Excess demand

Question 3.
Market equilibrium of a commodity shows,
(a) excess demand
(b) quantity demanded greater than quantity supplied
(c) quantity demanded equals quantity supplied
(d) excess supply
Answer:
(c) quantity demanded equals quantity supplied

Question 4.
When there is increase in demand, the demand curve.
(a) shifts reight ward
(b) shifts leftward
(c) shifts downward
(d) remains constant
Answer:
(a) shifts reight ward

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Question 5.
The government imposing upper limit on the price of a good or service is called:
(a) price floor
(b) price ceiling
(c) equilibrium price
(d) fair price
Answer:
(b) price ceiling

Plus Two Economics Market Equilibrium Two Mark Questions and Answers

Question 1.
At what price – higher or lower than the equilibrium price, there will be excess demand?
Answer:
When the market price is lower than the equilibrium price, there will be excess demand.

Question 2.
Make pairs.
Price floor, below equilibrium price, above equilibrium price, price ceiling
Answer:

  • Price floor – above equilibrium price.
  • Price ceiling – below equilibrium price.

Question 3.
Point out the consequences of price ceiling.
Answer:

  1. Black marketing
  2. Malpractices by fair price shops
  3. Sale of inferior quality goods.

Question 4.
What do you mean by control price?
Answer:
Fixation of price of a commodity at a lower level than equilibrium price is called control price. Control price is determined to protect the interest of the consumers.

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Question 5.
Market equilibrium of apple is given below in the diagram below.

  1. Define market equilibrium
  2. Find out the market price and equilibrium quantity

Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img1
Answer:

  1. market equilibrium is a situation where quantity demanded is exactly equal to the quantity supplied.
  2. The price of apple is ₹40 and the equilibrium quantity is 30kg.

Plus Two Economics Market Equilibrium Three Mark Questions and Answers

Question 1.
Match the following.

A B
Price lower than equilibrium price Excess demand
Equilibrium price Excess supply
Price higher than equilibrium price Demand = Supply

Answer:

A B
Price lowerthan equilibrium price Excess supply
Equilibrium price Demand = Supply
Price higher than equilibrium price Excess demand

Question 2.
The demand function and supply function of a product are given as qD = 60 – P for 0 = P = 60 qS = 30 + P for P > 10 Calculate equilibrium price.
Answer:
The demand and supply functions are given as
qD= 60 – P for 0 = P = 60
qS = 30 + P for P > 10
Equilibrium price is considered as the price at which quantity demanded is exactly equal to quantity supplied. Therefore we get.
60 – P = 30 + P
60-30 = 2 P
30 = 2P
P = 30/2 = 15
Therefore equilibrium price is ₹15.

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Question 3.
Complete the following statements.

  1. Long-run price under perfect competition will be equal to ……….
  2. Minimum price fixed by government for a product is known as ……….
  3. Maximum price fixed by government for a product is known as ………

Answer:

  1. average cost
  2. floor price
  3. price ceiling

Question 4.
Demand curve for labour is downward sloping. Explain
Answer:
Demand curve for labour is downward sloping indicating that more and more labour is demanded at lower wages. This is due to the operation of declining marginal productivity of labour. Marginal productivity of labodr declines due to the operation of diminishing returns. That is why the demand curve for labour slopes downward.

Question 5.
The market demand function and market supply functions are given as, Find the equilibrium price and equilibrium quantity.
qD = 200 – P for 0 = P = 200
qS = 120 + P for P > 10
Answer:
We find equilibrium price by equating market demand function and market supply functions as shown below.
qD = qS
200-P = 120 + P
2P = 80
P = 80/2 = 40
Therefore equilibrium price is ₹40. Equilibrium quantity is obtained by substituting the equilibrium price into either the demand or supply function equations. Applying the value of price ₹40 in demand equation we have.
qD= 200 – P
qD =200 – 40 = 160
Therefore equilibrium price is ₹40 and equilibrium quantity is 160.

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Question 6.
Prepare a note on market equilibrium.
Answer:
Equilibrium is defined as a situation where the plans of all consumers and firms in the market match and the market dears. In equilibrium, the aggregate quantity that all firms wish to sell equals the quantity that all the consumers in the market wish to buy; in other words, market supply equals market demand. The price at which equilibrium is reached is called equilibrium price and the quantity bought and sold at this price is called equilibrium quantity.

Therefore, qD (P*) = qS (P*) where P* denotes the equilibrium price and qD (P*) and qS (P*) denote the market demand and market supply of the commodity respectively at price P*

Question 7.
Suppose the demand and supply functions of commodity X are given by, Qd = 500 + 3P and Qs = 700 – P Qd = 500 + 3P Qs = 700 – P Find out the equilibrium price and quantity demanded and supplied.
Answer:
Equilibrium price and quantity can be determined by equating the demand and supply functions
Qd = Qs
500 + 3P = 700 – P
4P = 200
\(P=\frac{200}{4}=50\)
Equilibrium price is ₹50. Applying the price in the demand function, we get
500 + 3 × 50
500 + 150 =650
Therefore, equilibrium price is ₹50 and quantity is 650.
Qd = Qs
500 + 3P = 700 – P
4P = 200
\(P=\frac{200}{4}=50\)
Qd = 500 + 3 × 50
= 500 + 150 = 650

Question 8.
The diagram below illustrates the supply and demand for television sets. The original demand curve is D2
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img2
Using the diagram, state the new demand curve (D1 or D3) which will apply after each of the following changes taken place. (The same answer may be used more than once)

  1. A successful advertising campaign for television sets occurs
  2. Income decreases
  3. An increase in the population

Answer:

  1. Demand increases (D2 curve shifts right to D3)
  2. Demand decreases (D2 curve shifts left to D1)
  3. Demand increases (D1 curve shifts right to D3)

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Question 9.
Calculate equilibrium price and quantity based on the following information.
qd= 400 – P (1)
qs= 240 + 3 (p – 4) (2)
Answer:
At equilibrium,
qd = qs
Putting the values,
400 – p = 240 + 3(p – 4)
400 – p = 240 + 3p – 12
400-240 + 12 = 3p + p
172 = 4p
\(p=\frac{172}{4}\)
p =43
Putting p = 43 in the first equation, we get,
qd =400 – 43 = 357 Therefore, equilibrium price = 43 and
equilibrium quantity is = 357 units

Question 10.
The diagram shows relationship between two commodities A and B.

  1. Identify the commodities A and B
  2. Explain what happens to the price and quantity demanded of A when the price of A falls.

Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img3
Answer:

  1. A and B are substitutes.
  2. When the price of A falls people will demand more A. So the demand for B will fall. That will result in a decrease in the price of B.

Question 11.
The diagram below shows one of the government intervention programmes in the market.

  1. Identify the programme and calculate the excess supply.
  2. Explain how the government is monitoring the higher price fixed.

Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img4
Answer:
1. Minimum price/floor price, 40 unit excess supply.

2. The government announces the minimum price above the market price. As a result of this intervention there occurs excess supply in the market. The government has to remove the excess from the market to maintain the price. So the government store the excess supply in the warehouses and redistribute it at the time of shortage.

Question 12.
Under perfect competition, a market for a good is in equilibrium. There is simultaneous “decrease” both in demand and supply, but there is no change in market price. Explain with the help of a diagram how it is possible.
Answer:
The decrease in demand and supply is the same, and hence the price remain the same. Shows this by drawing appropriate diagram
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img5

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Question 13.
The diagrams below indicate four possible shifts in demand or in supply that could happen in particular markets. Relate each of the events described below to one of them. Also, give reason for the shift.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img6

  1. How does the lorry strike in Karnataka and Tamil Nadu affect the market for vegetables in Kerala?
  2. People become aware of the fact that Birds Eye Chilly is very much helpful to prevent Cholesterol. What happens to the market for Birds Eye Chilly?
  3. How do you think the rising income affect the market for fish?
  4. A new technique is discovered for manufacturing computer that greatly lowers their production cost. What happens to the market for computers?

Answer:

  1. figure C, supply falls and price rises.
  2. figure A, demand increases and price rises.
  3. figure B, demand increases and price rises.
  4. figure D, supply increases and price falls.

Plus Two Economics Market Equilibrium Five Mark Questions and Answers

Question 1.
Mention the impact of the following.

  1. Imposition of price ceiling below equilibrium price
  2. Imposition of price floor above the equilibrium price

Answer:

  1. Imposition of price ceiling below equilibrium price leads to excess demand.
  2. Imposition of price floor above the equilibrium price leads to an excess supply

Question 2.
Complete the following table to show the impact of simultaneous shifts of demand and supply on equilibrium price and quantity.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img7
Answer:
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img8

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Question 3.
What will happen if the price prevailing in the market is?

  1. above the equilibrium price
  2. below the equilibrium price.

Answer:
1. If the price prevailing in the market is above equilibrium price, supply will exceed demand. Under such a situation some firms will not be able to sell their desired quantity; so they will lower their price. All other things remaining constant as price falls quantity demanded rises quantity supplied falls, and finally equilibrium price P* will be restored. At P* quantity demanded will be equal to quantity supplied.

2. If the price prevailing in the market is above equilibrium price, demand will exceed supply. Under such a situation some consumers will be ready to pay more prices to get the commodity. This will tend to increase the price. All other things remaining constant as price rises quantity demanded falls, quantity supplied rises, and finally, equilibrium price P* will be restored. At P* quantity demanded will be equal to quantity supplied.

Question 4.
Draw distinction between floor pricing and price ceiling.
Answer:
Floor price means minimum price. Floor price is fixed to protect producers like farmers from price crashes. It ensures a remunerative price to producers. In India, floor prices are fixed for a variety of agricultural commodities like paddy, wheat, coconut, rubber etc.

On the other hand, price ceiling mean maximum price. It is the maximum price fixed by the government. The aim of price ceiling is to protect consumers. Government fixes price ceiling for essential products and medicines to protect the interests of the consumers.

Question 5.

  1. Identify the situations depicted in the following figures in panel A and B.
  2. Why do such policies are followed and explain the impact of such policies?

Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img9
Answer:
1. PANEL A – Price ceiling PANEL B –Price floor.

2. Price ceiling is fixed below equilibrium price. Imposition of price ceiling at ‘Pg’ gives rise to excess demand in the market price floor is fixed above equilibrium price. Imposition of floor price at ‘pg’ gives rise to excess supply.

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Question 6.
Mention the factors that cause shift in the supply curve.
Answer:
The factors that cause shift in the supply curves are:

  1. The change in the number of firms
  2. The change in the price of factor inputs
  3. Change in production technology
  4. Change in the prices of related goods
  5. Change in production tax.

Question 7.
How will a change in price of coffee affect the equilibrium price of tea? Explain the effect on equilibrium quantity through a diagram.
Answer:
Coffee and tea are substitutes. If prices of coffee are increased then its demand will decrease and demand tea would increase.lt will shift the demand curve of tea upwards. The equilibrium price and quantity will increase. This is shown in the following diagram.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img10
In the diagram, when the price of coffee increased then the demand for tea increases. This has resulted in equilibrium price and quantity of tea.

Question 8.
How is price determined in labour market?
Answer:
The price of labour is determined by the forces of demand and supply of labour. The households are the suppliers of labour and demand for labour comes from firms. Labour means the hours of work provided by labourers. The wage rate is determined at the intersection of the demand and supply curve of labour.

The firm being a profit maximiser will always employ labour up to the point where the extra cost it incurs for the last labour is equal to the additional benefit he earns from employment that labour. The extra cost of hiring one more labour is the wage rate. For each extra unit of labour, he gets a benefit equal to marginal revenue product of labour.

Thus firm employs labour up to a point where: W = MRPL Where MRPL = MR x MPL As long as MRPL is greater than the wage rate the firm will earn more profit by hiring one more labour and if at any level of labour employment MRPL is less than the wage rate the firm can increase here profit by reducing labour employed.

Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img11

Question 9.
Prepare a table showing differences between price ceiling and price floor.
Answer:

Price ceiling Price floor
Upper limit set by the government for some commodities Lower limit set by the government for some commodities
Imposed on essential goods such as wheat, rice etc. Agricultural goods, workers etc. are benefitted
To maintain price ceiling, fair price shops may be opened To maintain price floor, government needs to buy the excess quantity supplied
Price lower than the equilibrium price Price higher than the equilibrium price
Creation of excess demand Creation of excess supply

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Question 10.

  1. With the help of a diagram show how the wage rate is determind in a free market.
  2. Analyse the impact of an increased entrance of foreign migrant labourers into the labour market.

Answer:
1. The diagram below shows how the wage rate of labour in a free market is determined. DL is the demand for labour and SL is the supply of labour, ‘e’ is the point of equilibrium, ‘ow’ is the wage rate and ‘oq’ is the quantity of labours.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img12

2. When the foreign migrant labour enters into the labour market, the supply of labour will shift rightward and the wage rate will come down as shown in the figure. ‘ow’ is the original wage rate and ‘OQ’ is the original quantity of labour. ow1 is the new wage rate and OQ, is the new quantity of labourers.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img13

Question 11.
Suppose we have two equations, one for demand and other for supply.
Demand equation: Qxd = 100 – 10Px
Supply equation : Qxs = 60 + 10Px

  1. Calculate equilibrium price and quantity using the equations.
  2. Construct demand and supply schedules by assigning various prices. Obtain equilibrium price and quantity graphically.

Answer:
1. Equilibrium price =2, equilibrium quantity=80
2. Demand & supply schedules
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img14

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Question 12.
Let us take market of commodity ‘X’, which is in equilibrium. Suppose demand for the commodity increases. Explain the chain of effects of this change till the market again reaches equilibrium. Use diagram.
Answer:
Increase in demand leads to disequilibrium-price in-creases – super profit – new firms enter the industry – or existing firms expand production – increase in output – supply increases – supply curve shifts – the process continue until price returns the to the equilibrium level. Draws the diagram, and explains the process.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img16

Plus Two Economics Market Equilibrium Eight Mark Questions and Answers

Question 1.
Observe the following table.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img17

  1. Find equilibrium price.
  2. Fill the fourth column
  3. Why ₹35 and ₹40 are not equilibrium prices?
  4. Product surplus drives prices up and shortage drives them down. Do you agree?
  5. Draw a diagram of the above table showing the equilibrium price determination

Answer:
1. The equilibrium price is ₹37. At this price both demand and supply are equal.
2.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img18
3. At ₹35, demand exceeds the supply causing a shortage in the market. At ₹40, supply exceeds demand causing surplus. Therefore, these prices are equilibrium prices.
4. No. I do not agree with this argument.
5.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img19

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Question 2.
Discuss the impact of the factors mentioned below on equilibrium price and quantity.

  1. shift in demand to right
  2. shift in demand to left
  3. shift in supply to right
  4. shift in supply to left.

Answer:
1. When demand curve shifts to right (increase in demand), there will be increase in equilibrium price and increase in equilibrium quantity. This change is shown in the diagram.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img20

2. When demand curve shift to left (decrease in demand), both equilibrium quantity and equilibrium price falls. This is shown in the diagram.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img21

3. When supply curve shift to right (increase in supply), the equilibrium price deceases and the equilibrium quantity increases. This is given in the following diagram.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img22

4. When supply curve shifts to left (decrease in supply), the equilibrium price increases and the equilibrium quantity decreases. This is given in the following diagram.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img23

Question 3.
Suppose the demand and supply curves of salt are given by. qD = 1000 – P qS = 700 + 2P

  1. Find the equilibrium price and quantity
  2. Suppose that the price of input used to produce salt has increased so that the supply curve is qS = 400 + 2P How does the equilibrium price and quantity change? Does the change conform to your expectation?
  3. Suppose the government has imposed a tax of 3 per unit of salt. How does it affect the equilibrium price and quantity?

Answer:
1. equilibrium price and quantity
qD = 1000 – P
qS = 700 + 2P
For equilibrium
qD = qS
1000 – P = 700 + 2P
1000 – 700 = 3 P
3P = 300
P = 300/3 = 100
Put the value of P in supply equation
qS = 700 + 2P
qS = 700 + 2×100
qS =700 + 200 = 900
Therefore the equilibrium price = ? 100 and the equilibrium quantity is = 900 units

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2. For equilibrium
qD = qS
1000 – P = 400 + 2P
1000 – 400 = 3P
600 = 3 P
P = 600 / 3 = 200
Put the value of P in demand equation
QD= 1000 – P
QD = 1000  – 200 = 800
Therefore the equilibrium price = ₹200 and the equilibrium quantity is = 800 units This change confirms to our expectations, i.e., rise in input prices raises prices and lowers supply.

3. qD= 1000 – P
qS= 700 + 2P
When ₹3 as tax is imposed on sale of salt the new demand and supply function will change
qD= 1000 – (P + 3)
qS= 700 + (2P +3)
In part A equilibrium price was ₹100 which goes up to ₹103 with imposition of tax
qD = 1000 – (100 + 3) = 1000 – 103 =897
qS = 700 + (2P + 3)
= 700 + 2(100 + 3)
= 700 + 2×103
= 700 + 206 = 906
qD < qS
Therefore, new price and quantity has to be adjusted.

Question 4.
The diagram below shows how the price of wheat is determined in a free market.
a. Show in a seperate diagram the changes on price and quantity demanded of wheat due to the following factors

  1. The price of fertilizers increases.
  2. The price of rice a substitute of wheat increases.

b. Assess the impact of an increased demand for wheat and an increase in its production.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img25
Answer:
a. price and quantity demanded of wheat.
1. When the price of fertilizers increases the supply of wheat decreases. Its price increases and the quantity falls.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img26
2. When the price of rice, a substitute of wheat increases people may switch to consume wheat, this will increase the demand for wheat. Its price will increase and quantity also will increase.

Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img27

b. When the demand for heat increases its demand curve will shift rightward. When production increases its supply curve will shift rightward as shown in the diagram below.
Plus Two Economics Chapter Wise Questions and Answers Chapter 5 Market Equilibrium img28
Due to these shifts, the quantity will increase anyhow. But the effect on the price will be in different forms. The price may fall, will be constant or even may increase. Whether the price will increase, decrease or remain constant is determined by the respective shifts in demand and supply.

If both demand and supply shift in the same magnitude the price will be the same. If the shift in the demand is more than the supply the price will increase. And if the shift in the supply is more than the shift in the demand the price will fall.

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Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Students can Download Chapter 3 Components of the Computer System Questions and Answers, Plus One Computer Science Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.

Kerala Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Plus One Components of the Computer System One Mark Questions and Answers

Question 1.
The Tangible parts of a computer is _________
Answer:
Hardware

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 2.
The instructions that tell the hardware to perform a task is __________
Answer:
Software

Question 3.
The brain of the computer is __________
Answer:
CPU

Question 4.
CPU means _________
Answer:
Central Processing Unit

Question 5.
ALU is
Answer:
Arithmetic Logic Unit

Question 6.
I am an input device. I can read text or picture on paper and translate into computer usable form. Who am I?
Answer:
Scanner

Question 7.
Odd man out.
(a) Trackball
(b) Joy Stick
(c) Scanner
(d) LCD
Answer:
(d) LCD. It is an output device. Others are input device

Question 8.
Odd man out.
(a) Inkjet
(b) Laser
(c) Dot Matrix Printer
(d) Thermal
Answer:
(c) Dot Matrix Printer. It is impact printer others are non impact printers.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 9.
The storage capacity of a CD is ________
(a) 1.44 MB
(b) 700 GB
(c) 700 MB
(d) 650 GB
Answer:
(c) 700 MB

Question 10.
__________ sheet is used to write answers in Kerala Entrance Exam.
Answer:
OMR Sheet

Question 11.
ABC textile uses reader to input the item and its price.
Answer:
Bar code reader

Question 12.
_________ device senses the presence or absence of a pencil mark.
Answer:
OMR

Question 13.
Name any two printing devices.
Answer:
Mouse and touchpad

Question 14.
__________ is a device that draws pictures on a paper.
Answer:
Plotter

Question 15.
Primary memory is classified into two. What are they?
Answer:
RAM and ROM

Question 16.
The storage capacity of a DVD is _________.
Answer:
4.7 GB

Question 17.
Winzip is a ___________ utility.
Answer:
Compression utility

Question 18.
Win Rar is a ________ utility.
Answer:
Compression utility

Question 19.
Most commonly used input device is _________________
Answer:
Keyboard or mouse

Question 20.
Govt, decided to conduct a test that contains all objective type questions. Which device is most suitable for evaluation.
Answer:
OMR

Question 21.
__________ is used mostly for computer games.
Answer:
Joy stick

Question 22.
I am an input device. I have a stick with two buttons called triggers on the top. Who am I?
Answer:
Joy stick

Question 23.
I am a pointing device. I am a stationary device. Who am I?
Answer:
Touchpad

Question 24.
In portable computers which pointing device is suitable?
Answer:
Touchpad

Question 25.
State true or false.
Hard copy devices are very slow compared to soft copy devices.
Answer:
True

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 26.
________ is also called firrfi ware.
Answer:
ROM

Question 27.
__________ is acts as an interface between user and computer.
Answer:
Operating system

Question 28.
_________ is used to create and modify any type of document.
Answer:
Word Processor

Question 29.
_________ is a set of programs that manage the database.
Answer:
DBMS

Question 30.
__________ package contains rows & columns.
Answer:
Spread sheet

Question 31.
_________ is a presentation package.
Answer:
Power point

Question 32.
Your computer teacher asked you to explain the project work done by your group. Which package will help you to do so?
Answer:
Power Point

Question 33.
___________ is a DTP Package.
(a) Excel
(b) Powerpoint
(c) PageMaker
(d) None of these
Answer:
(c) PageMaker

Question 34.
DTP is ________
Answer:
Desk Top Publishing

Question 35.
_______ is designed to help computer for its smooth functioning.
Answer:
Utilities

Question 36.
Customised software is also called _________
Answer:
Tailor made software

Question 37.
__________ S/W is used to remove virus from a computer.
Answer:
Anti Virus S/W

Question 38.
Name any Antivirus S/W.
Answer:
Norton Antivirus, McAfee, Avira, AVG

Question 39.
Name the two classifications of output devices.
Answer:
Hard copy and soft copy

Question 40.
Name the two classifications of printers.
Answer:
Impact printer and non-impact printer

Question 41.
_______ gas is used in plasma panels
Answer:
(a) Oxygen
(b) Neon
(c) Mercury
(d) helium Neon
Answer:
(b) Neon

Question 42.
__________ printers are used in fax machine.
Answer:
Thermal Printers

Question 43.
_________ is read/write memory.
Answer:
RAM

Question 44.
________ is of volatile memory
(a) ROM
(b) RAM
(c) CD
(d) DVD
Answer:
(b) RAM

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 45.
From the following which is expensive?
(a) CD
(b) DVD
(c) HDD
(d) RAM
Answer:
(d) RAM

Question 46.
You want to input your photograph into computer. Which device is used for this?
(a) Scanner
(b) Mouse
(c) OMR
(d) OCR
Answer:
(a) Scanner

Question 47.
The primary memory which is commonly used in electronic billing machines to store price of products is
(a) P R O M
(b) E P R O M
(c) E E P R O M
(d) None of these
Answer:
(b) E P R O M

Question 48.
Name any three pointing devices,
Answer:
Mouse, Touchpad and light pen.

Question 49.
You want to print your brother’s resume which printer will you choose. Why?
Answer:
I will choose either Ink-jet or Laser printer. Because these produce less noise and produce high quality printing output. They are used to print characters as well as graphics (Photos) with very high quality.

Question 50.
The fastest memory in a computer is
Answer:
Registers

Question 51.
The storage capacity of a single layer DVD is _______
Answer:
4.7 GB

Question 52.
Give two examples for OS.
Answer:
Windows 7, Windows Vista

Question 53.
A program in execution is called _______
Answer:
Process

Question 54.
Name the software that translates assembly language program into machine language program.
Answer:
Assembler

Question 55.
DBMS stands for _________.
Answer:
Data Base Management System .

Question 56.
Duplicating disc information is called __________.
Answer:
Backup

Question 57.
An example of free and open source software is _______?
Answer:
Linux

Question 58.
The software that gives users a chance to try it before buying is __________
Answer:
Shareware

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 59.
An example of proprietary software is _________.
Answer:
Tally

Question 60.
Which software is used for calculation?
(a) Word processor
(b) Spreadsheet
(c) Presentation
(d) Multimedia
Answer:
(b) Spreadsheet

Question 61.
Accumulator stores ________
(a) address of data
(b) instruction to be executed
(c) address of next instruction to be executed
(d) intermediate result
Answer:
(d) intermediate result

Question 62.
If Tracks and Sectors : Hard disk, then
___________ : Compact disk
Answer:
Pits and Lands (OR) 0 and 1

Question 63.
Which one of the following file extensions is different from others?
(a) WAV
(b) MP3
(c) PNG
(d) MIDI
Answer:
(c) PNG, the others are audio files.

Question 64.
Which register holds the memory address of next instruction to the executed?
(a) Accumulator
(b) PC
(c) MBR
(d) MAR
Answer:
(b) PC

Question 65.
1. Write the following memory devices in the order of their speed. (fastest to slowest order)

  • Cache
  • RAM
  • Hard Disk
  • Registers

2. What do you mean by Freeware and Shareware?
Answer:
1. Memory devices in the order of their speed.

  • Registers
  • Cache
  • RAM
  • Hard Disk

2. Freeware and Shareware:

  • Freeware: A s/w with Copy right is available free of cost for unlimited use.
  • Shareware: It is an introductory pack distributed on a trial basis with limited functionality and period.

Plus One Components of the Computer System Two Mark Questions and Answers

Question 1.
The Higher Secondary Department wishes to conduct an examination for +1 students with multiple choice questions and publish results as soon as possible. Suggest a method to evaluate the answer scripts and publish the results quickly & correctly with the help of computers.
Answer:
OMR has to be used, it senses the presence or absence of a mark (bubbles) using a high density beam then converted into electric signals for computer. It needs good quality expensive paper and accurate alignment of printing on forms.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 2.
Remesh is a graphic designer who prepares his drawing using a computer. He desires for an alternative device by which he can draw directly on the screen. Suggest a device for this and explain it working.
Answer:
Light pens are used for this. It consists fo a photocell placed in a small tube, it is able to detect the light coming from the screen. Hence locate the exact position on the screen. It is used by graphic designers, illustrators and drafting engineers, with the help of CAD to draw directly on the screen.

Question 3.
You might have noticed that in some shops billing is done using computers without typing the item name, price, quantity, etc. Mention the device used for entering data and explain its working.
Answer:
A device called Bar Code Reader is used for this. It contains photoelectric scanner that read the bar code and input the information to the computer attached to it. It helps to reduce the errors and process the bills quickly.

Question 4.
Your scholl has arranged an excursion. You are having an ordinary camera whereas your friend has a digital camera. List the benefits your friend enjoys by using digital camera.
Answer:

  1. Digital camera does not need film.
  2. More number of shots can take
  3. Operational cost is less
  4. Very easy to manipulate images in digital form using computers.

Question 5.
A medical shop in your locality wishes to purchase a printer for their billing purpose. Which type of printer will you recommend if carbon copies are to be taken. Justify.
Answer:
Dot Matrix Printer. To take carbon copies impact printer is a must, operational cost is less and it can print bills in a moderate speed.

Question 6.
Find the extact match.
Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System 1
Answer:

  1. D
  2. C
  3. B
  4. A

Question 7.
Your friend wishes to start a DTP centre with facilities to design posters and notices, to scan pictures and modify them and to print them. What would be your suggestions regarding the computer and peripherals?
Answer:
The requriements are computer, scanner, printer and software.

Question 8.
Find the most appropriate match.
Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System 2
Answer:
1 – D
2 – C
3 – A
4 – B

Question 9.
Suggest a suitable device for the following.

  1. High quality printing
  2. High quality drawing
  3. Printing with carbon copies
  4. Economical printing of small quantities of data

Answer:

  1. Non impact – Laser printers, Inkjet
  2. Plotter
  3. Impact (DMP(Dot Matrix Printer))
  4. Dot Matrix Printers

Question 10.
“Not all primary memory is volatile”. Justify this statement.
Answer:
Primary Memory (Main memory) is classified into two RAM and ROM. Out of this RAM is volatile but ROM is non-volatile.

Question 11.
Categorise the softwares in the list according to the appropriate classifications given below.

  1. Classification: OS, Compiler, DTP Software, Compression software, Word processor
  2. List: Open Office Writer, Photoshop, 7 Zip, MS Word, Unix, C++, PageMaker, Winzip, C, Windows 98.

Answer:

  • OS – Unix, Windows 98
  • Compiler – C, C++
  • DTP Software – Photoshop, PageMaker
  • Compression – 7 Zip, Winzip
  • Word Processor – Open Office Writer, MS word

Question 12.
Your friend has just assembled a computer. Now he is provided with installation CD’s of MS Word and Microsoft Windows XP. In what order will he install them? Justify your answer.
Answer:
First he has to install the Microsoft Windows XP because it is the OS, it makes the computer to work other programmes. After that only he can install MS Word It is a package.

Question 13.
A group of 20 students is given a test in 6 subjects. The examiner wishes to prepare a neatly formatted mark list with total and Rank. Suggest a suitable software to serve this purpose. Give reasons.
Answer:
The spreadsheet Excel is a suitable software to serve this purpose. It consists of inbuilt functions, that facilitates to find total and rank easily.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 14.
A program is written in BASIC, C and assembly language. Mention the difference in converting these programs to machine language.
Answer:

  1. C – Compiler
  2. BASIC – Interpreter
  3. Assembly Language – Assembler

Question 15.
Your friend told you that he has a system. What is a system? Explain.
Answer:
A computer is also called a system. A computer is not a single unit. It consists of more than one unit such as input unit, output unit, memory unit, ALU and control unit. Therefore a computer is called a system.

Question 16.
What is cache memory?
Answer:
A cache (pronounced cash) memory is a high-speed memory placed in between the processor and primary memory to reduce the speed mismatch between these two.

Question 17.
What is the use of program counter register?
Answer:
This register stores the memory address of the next instruction to be executed by the CPU.

Question 18.
What is HDMI?
Answer:
Its full form is High Definition Multimedia Interface. Through this port we can connect high definition quality video and multi channel audio over a single cable.

Question 19.
Give two examples for customized software.
Answer:

  1. Payroll System: It keeps track of details of employee and their salary details in an organisation
  2. Inventory Management System: It keeps tack of all about inventory in a company

Question 20.
What do you mean by free and open source s/w?
Answer;
Here “free” means there is no copy right or licensing. That is we can take copies of the s/w or modify the source code without legal permission of its vendor (creator) we can use and distribute its copy to our friends without permission. That is Freedom to use, to modify and redistribute

Question 21.

  1. What do you mean by cache memory? (1)
  2. Write the names of the figures given below.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System 3

Answer:
1. It is a high speed memory placed in between the CPU and RAM. CPU is a high speed memory compared to RAM. There is a speed mismatch between the CPU and RAM to resolve this problem a high speed memory called cache memory is placed in between the CPU and RAM

2. QR code and Bar Code

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 22.
What is the role of students in e-Waste disposal?
Answer:
Student’s role in e-Waste disposal

  • Stop buying unnecessary electronic equipments
  • Repair Faulty electronic equipments instead of buying a new one.
  • Give electronic equipments to recycle
  • Buy durable, efficient, quality, toxic free, good warranty products
  • check the website or call the dealer if there is any exchange scheme
  • Buy rechargeable battery products

Plus One Components of the Computer System Three Mark Questions and Answers

Question 1.
Why is the paper coming from the laser printer hot? Explain.
Answer:
Laser printer uses photocopying technology. It uses a positively charged drum and negatively charged toner (dry powder). A laser beam is used to scan the page to be printed on the drum with positive charge and then rolled through a reservoir of negatively charged toner.

It uses a combination of heat and pressure to adhere the dry powder to the paper. That is why, the paper coming from the laser printer is hot.

Question 2.
Explain the process how data from the hard disk is taken to the processor for processing.
Answer:
A processor is a high speed device. It can access data only from the Primary Memory (RAM). So we have to transfer data from hard disk to RAM. We know that a hard disk is a slow device also. So data is first transferred to RAM.

A RAM is comparatively slower than processor. To reduce the speed mismatch between the RAM and processor, the data has to transfer to CPU registers. Then the processor takes the data from the CPU register because CPU register has almost equal speed as processor.

Question 3.
Why computer is called as a system? (3)
Answer:
A computer is also called a system. A computer is not a single unit. It consists of more than one unit such as input unit, output unit, memory unit, ALU and control unit. Therefore a computer is called a system.

Question 4.
Differentiate hardware and software. (3)
Answer:
The tangible parts of a computer is called hard¬ware. We can see, touch and feel the hardware in a computer. The set of instructions that tell the hardware how to perform a task is called software. Without software computer cannot do anything.

Question 5.
We all have a brain. Just like this, is the computer has a brain? Explain it?
Answer:
Yes. CPU is the brain of a computer. The CPU comprises three parts ALU, Control Unit and Memory. The control unit control the overall functioning of a system. ALU performs all the arithmetic calculations and takes logical decisions. Memory is used for storage of data for future reference.

Question 6.
Explain the various functions of a control unit.
Answer:
The control unit performs the following functions.

  1. It controls data flow between input device ALU, memory and output devices.
  2. Normal execution of a program is line by line. The control unit controls this sequence with the help of ALU and memory.
  3. It controls the decoding and interpretation of in-structions.

Question 7.
Match the following

1. Input device a. Linux
2. Output device b. Java
3. Secondary Memory c. Joystick
4. System S/W d. Plotter
5. Application S/W e. PROM
6. Primary Memory f. HDD

Answer:
1 – c
2 – d
3 – f
4 – a
5 – b
6 – e

Question 8.
Write down the full form of the following.

  1. VDU
  2. OMR

Answer:

  1. VDU – Visual Display Unit
  2. OMR – Optical Mark Reader

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 9.
We know that a scanner is a hardware. What do you think of a virus scanner? Explain.
Answer:
We know that a scanner is a hardware but a virus scanner is not a hardware. It is a program. That is a virus scanner is an antivirus software. That scans your disk (HDD, CD, DVD, Pen Drive) for viruses and removes them (if it can), if any virus is found.

Question 10.
Your friend told you that a compiler is a hardware. Is it true? Justify your answer.
Answer:
It is not true. A compiler is not a hardware but it is a software. A compiler is a collection of programs that translates program written in HLL into machine language.

Question 11.
Anil purchased a product from a supermarket and he found that its wrapper contains light and dark bars. What is the purpose of this ?
Answer:
This light and dark bars are called bar code. It is used to record some details about the product such as item code, name, price etc. A device called Bar Code Reader contains photo electric scanner that read the bar code and input the information to the computer attached to it. It helps to reduce error and process the bills quickly.

Question 12.
What are the disadvantages of OMR? (2)
Answer:
The disadvantages are:

  1. It needs accurate alignment of printing on forms.
  2. It needs good quality expensive paper.

Question 13.
Differentiate CRT and LCD (OR) Your friend going to purchase a computer. He asked you which is better, CRT or LCD? What is your opinion?
Answer:
The difference between CRT and LCD is given below:

CRT LCD
It is heavy and bulky It is neither heavy nor bulky
It consumes more power and emits heat It consumes less power and does not emit heat
It is used in desk top computer It is used with laptop and desktop
It is cheaper It is expensive.

So LCD is more better than CRT

Question 14.
While you pressing “A” on the keyboard what is actually stored in the memory?
Answer:
The keyboard is an electro mechanical device that is designed to create electronic codes when a key is pressed and this code is transmitted to the memory through the cable. Here while you pressing “A” on the keyboard, the electronic codes corresponding to the ASCII value 01000001 is transmitting to the memory.

Question 15.
Your family friend started a supermarket. He asked you, which printer is suitable to print bills. Give your suggestion.
Answer:
According to my opinion, dot matrix printer is most suitable. Because they are capable of faster printing as well as it is cheap also. It’s printing quality is not good but cost per copy is very cheap. Dot matrix printer consists of a ribbon cartridge that is cheap and can be changed easily. Here we have to print more copies at a time. So dot matrix is suitable.

Question 16.
Suppose your brother is an engineer. He wants to draw some drawings. Which output device is suitable? Explain.
Answer:
Plotter is suitable for him. A plotter is a device that draws pictures ordiagrams on paper based on commands from a computer. Plotters draw lines using a pen. Pen plotters generally use drum or flat bed paper holders.

In a drum plotter the paper is mounted on the surface of a drum. Here the paper is rotated. But in a flatbed plotter the paper does not move and the pen holding mechanism provides the motion that draws pictures. Plotters are used in engineering applications where precision is needed.

Question 17.
Match the following.

1. Operating System a. Compiler
2. Language Processor b. Windows Vista
3. Package Administratin S/W c. Santhi Hospital
4. Utility d. Spreadsheet
5. Customised S/W e. Disk defragmenter

Answer:
1 – b
2 – a
3 – d
4 – e
5 – c

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 18.
There are special purpose storage locations within the CPU. What are they explain ?
Answer:
Registers are special purpose storage locations within the CPU. They are temporary storage locations. The processing power of a CPU depends on register. Registers appears with storage capacity of 8 bits, 16 bits, 32 bits an 64 bits. They accept, store and transfer data from the CPU at a very high speed.

  • Program Counter: This register stores the memory address of the next instruction to be executed by the CPU.
  • Instruction Register: The instruction to be executed is stored in this register.
  • Memory Address Register: The address on the memory location from which data has to be read is stored here.
  • Memory Buffer Register: The data read from the location specified by the MAR is stored in this register.
  • General Purpose Registers: These are used to store the result and intermediate results during a processing.

Question 19.
What is an operating system?
Answer:
An operating system acts as an interface between user and computer without an operating system computer is a bare machine. That is without an OS computer cannot do anything. The OS not only makes the system convenient to use but also use hardware in an efficient manner,
eg: Windows XP, Vista, Linux, MS Dos, Windows 7.

Question 20.
We know that a computer only knows low level language and human beings use high level language. So how is it possible to communicate? Explain.
Answer:
The language processors translate the programs written in HLL into machine language which is understood by the computer. The different language processors are given below:
1. Assembler:
This language processor translates programs written in assembly language into machine language.

2. Interpreter:
This language processor translates programs written in HLL into machine language by converting and executing it line by line. If there is any error, the execution is stopped we, can continue after the correction of the program.

3. Compiler:
This language processor is same as interpreter. But it translates HLL into machine language by converting whole lines at a time. If there is any error, correcting all the errors then only it will execute.

Question 21.
Normally a CD contains 700 MB. Is it possible to store a file with size 1 GB? Explain.

OR

Normally a Car has a seating capacity of 5 persons including the driver. But some adjustments more persons can be accommodated in Car. This is connected with a utility. Which is the utility? Explain.
Answer:
Compression utility is used for this. By using compression utility programs we can reduce the file size upto the one third of the file size. So by using this we can reduce 1GB file and store in a CD. It is provided by the OS.

The other compression utility programs are Winzip, WinRar etc. It is possible to compress the files and when needed, these compressed files can be uncompressed and it is restored to their original form.

Question 22.
What is a Virus?
Answer:
A virus is a bad program or harmful program to damage routine working of a computer system. It reduces the speed of a computer. It may be delete the useful system files and make the computer useless.

Question 23.
What do you mean by Utilities?
Answer:
Utilities are useful programs which are designed to help computer for its smooth functioning. Some utilities are back up utility, Disk defragmentation. Virus scanner, etc. It is provided by the O.S.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 24.
Differentiate RAM and ROM.
Answer:
The difference between RAM and ROM is given below.

RAM ROM
1. It is Random Access Memory 1. It is Read only Memory
2. It is Read/Write memory 2. We can’t write but we can only read memory.
3. It is temporary 3. It is permanently stored.
4. It is volatile 4. It is non volatile
5. RAM is faster 5. It is slower
6. It is used to store data and instructions needed by CPU for processing 6. It contains instructions to check the hardware components, BIOS operations etc.
7. It is also called firmware.

Question 25.
Mention any two functions of OS.
Answer:
Major functions of an operating System

  1. Process management: It includes allocation and de allocation of processes(program in execution) as well as scheduling system resources in efficient manner
  2. Memory management: It takes care of allocation and de allocation of memory in efficient manner
  3. File management: This includes organizing, naming, storing, retrieving, sharing, protecting and recovery of files.
  4. Device management: Many devices are connected to a computer so it must be handled efficiently.

Question 26.
Give two examples of human ware.
Answer:
(Write any two from the following). The term refers the persons who use computer System Administrator: It is a person who has central control over the computer systems.

  • System Managers: He is responsible for all business transactions with all vendors and contractors.
  • System Analysts: He is responsible to improve the productivity and efficiency.
  • Database Administrator: It is a person who has a central control over the DBMS.
  • Computer Engineer: The person design either h/w or s/w of a computer system.
  • Application Programmer: These are computer professionals who interact with the DBMS through programs.
  • Computer operators: He is an end user and does not know computer in detail.

Question 27.
Explain how e-waste creates environmental and health problems. What are the different methods for e-waste disposal? Which one is the most effective in your point of view? Why? (5)
Answer:
e-Waste(electronic waste): It refers to the malfunctioning electronic products such as faulty computers, mobile phones, tv sets, toys, CFL, batteries etc. It contains poisonous substances such as lead, mercury, cadmium etc and may cause diseases if not properly managed.

A small amount is recycled. Due to this our natural resources are contaminated(poisoned). Some of them can .recycle properly. But it is a very big problem in front of the Government to collect segregate, recycle and disposal of e-Waste.
e-Waste disposal methods:

  1. Reuse: Reusability has an important role of e-Waste management and can reduce the volume of e-Waste
  2. Incineration : It is the process of burning e-Waste at high temperature in a chimney
  3. Recycling of e-Waste: It is the process of making new products from this e-Waste.
  4. Landfilling: It is used to level pits and cover by thick layer of soil.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 28.
What do you mean by e-waste? Explain the role of students in e-waste disposal.
Answer:
e-Waste(electronic waste): It refers to the malfunctioning electronic products such as faulty computers, mobile phones, tv sets, toys, CFLetc. It contains poisonous substances such as lead, mercury, cadmium etc and may cause diseases if not properly managed.
Student’s role in e-Waste disposal

  1. Stop buying unnecessary electronic equipments
  2. Repair Faulty electronic equipments instead of buying a new one.
  3. Give electronic equipments to recycle
  4. Buy durable, efficient, quality, toxic free, good warranty products
  5. check the website or call the dealer if there is any exchange scheme
  6. Buy rechargeable battery products

Plus One Components of the Computer System Five Mark Questions and Answers

Question 1.
Write short notes about input devices.
Answer:
An input device is used to supply data to the computer. They are given below:
1. Key board:
It is the most widely used device to input information in the form of words, numbers etc. There are 101 keys on a standard key board. The keys on the key board are often classified into alpha numeric keys (A to Z, Oto 9), function keys (F1 to F12), special purpose keys (Special characters), cursor movement keys (arrow keys). While pressing a key, the corresponding code’s signal is transmitted to the computer.

2. Mouse:
It is a pointing device, that controls the movement of the cursor, or pointer as a display screen. A mouse has two or three buttons, it is often used in GUI oriented computers. Under the mouse there is a ball, when the mouse moves on a flat surface this ball also moves. This mechanical motion is converted into digi¬tal values that represents x and y values of the mouse movement.

3. Optical Mark Reader (OMR):
This device identifies the presence or absence of a pen or pen¬cil mark. It is used to evaluate objective type exams. In this method special preprinted forms r.e designed with circles can be marked with dark pencil or ink.

A high intensity beam in the OMR converts this into computer usable form and detects the number and location of the pencil marks. By using this we can evaluate easily and reduce the errors.

4. Bar code / Quick Response (QR) code reader:
Light and dark bars are used to record item name, code and price is called Bar Code. This information can be read and input into a computer quickly without errors using Bar Code Readers.

It consists of a photo electric scanner and it is used in super market, jewellery, textiles etc. QR codes are similar to barcodes but it uses two dimensional instead of single dimensional used in Barcode.

5. Joy Stick:
It is a device that lets the user move an object quickly on the screen. It has a liver that moves in all directions and controls the pointer or object. It is used for computer games and CAD / CAM systems.

6. Light Pen:
It is an input device that use a light sensitive detector to select objects directly on a display screen using a pen. Light pen has a photocell placed in a small tube. By using light pen, we can locate the exact position on the screen.

7. Scanner:
It is used to read text or pictures printed on paper and translate the information into computer usable form. It is just like a photostat machine but it gives information to the computer.

8. Digital Camera:
By using digital camera, we can take photographs and store in a computer. Therefore we can reduce the use of film. Hence it is economical.

9. Touchpad:
It is a pointing device found on the portable computers(laptop). Just like a mouse it consists of two buttons below the touch surface to do the operations like left click and right click. By using our fingers we can easily operate.

10. Microphone:
By using this device we can convert voice signals into digital form.

11. Biometric sensor:
It is used to read unique human physical features like fingerprints, retina, iris pattern, facial expressions etc. Most of you give these data to the Government for Aadhaar.

12. Smart card reader:
A plastic card(maybe like your ATM card) stores and transmit data with the help of a reader.

13. Digital Camera :
By using digital camera, we can take photographs and store in a computer. Therefore we can reduce the use of film. Hence it is economical.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 2.
Briefly explain the various visual display units.
Answer:
The visual display units are given below:
1. Cathode Ray Tube (CRT):
There are two types of CRT’s, monochrome (Black and white) and colour. Monochrome CRT consists of one elec-tron gun but colour CRT consists of 3 electron guns (Red, Green and Blue) at one end and the other end coated with phosphor. It is a vacuum tube. The phosphor coated screen can glow when electron beams produced by electron guns hit.

It is possible to create all the colours using Red, Green and Blue. The images produced by this is refreshed at the rate of 50 or 60 times each second.Its disadvantage is it is heavy and bulky. It consumes more power and emits heat. But it is cheap. Nowadays its production is stopped by the company.

2. Liquid Crystal Display (LCD):
It consists of two, electrically conducting plates filled with liquid crystal. The front plate has transparent electrodes and the back plate is a mirror. By applying proper electrical signals across the plates, the liquid crystals either transmit or block the light and then reflecting it back from the mirror to the viewer and hence produce images. It is used in where small sized displays are required.

3. Light Emitting Diocte(LED):
It uses LED behind the liquid crystals in order to light up the screen. It gives a better quality and clear image with wider viewing angle. Its power consumption is less.

4. Plasma Panels:
It consists of two glass plates filled with neon gas. Each plate has several parallel electrodes, right angles to each other. When low voltage is applied between two electrodes, one on each plate, a small portion of gas is glow and hence produce images. Plasma displays provide high resolution but are expensive. It is used in, where quality and size is a matter of concern.

5. Organic Light Emitting Diode(OLED) Monitors:
It is made up of millions of tiny LEDs. OLED monitors are thinner and lighter than LCDs and LEDs. It consumes less power and produce better quality images but it is very expensive.

Question 3.
Your friend wants to buy a printer. He wants to know more about printers. Explain different types of printers.
Answer:
Printer: There are two types of printers impact and non-impact printers. Printers are used to produce hard copy.
Impact Printers: There is a mechanical contact between print head and the paper.

1. Dot Matrix Printer:
Here characters are formed by using dots. The printing head contains a vertical array of pins. The letters are formed by using 5 dot rows and 7 dot columns. Such a pattern is called 5 × 7 matrix.

This head moves across the paper, the selected pins fire against an inked ribbon to form characters by dot. They are capable of faster printing, but their quality is not good.

2. Non-impact Printers:
There is no mechanical contact between print head and paper so carbon copies cannot be possible to take. They are inkjet, laser, thermal printers etc.

(a) Inkjet Printer:
It works in the same fashion as dot matrix printers, but the dots are formed with tiny droplets of ink to be fired from a bottle through a nozzle. These droplets are deflected by an electric field using horizontal and vertical deflection plates to form characters and images.

It is possible to generate colour output. They produce less noise and produce high quality printing output. The printing cost is higher. Here liquid ink is used.

(b) Laser Printer:
It uses photo copying technology. Here instead of liquid ink dry ink powder called toner is used. A drum coated with positively charged photo conductive material is scanned by a laser beam. The positive charges that are illuminated by the beam are dissipated. The drum is then rolled through a reservoir of negatively charged toner which is picked up by the charged portions of the drum.

It adheres to the positive charges and hence creating a page image on the drum. Monochrome laser printer uses a single toner whereas the colour, laser printer uses four toners. Its print quality is good less noise and printing cost is higher.

(c) Thermal Printers:
It is same as dot matrix printer but it needs heat sensitive paper. It produces images by pushing electrically heated pins to the special paper. It does not make an impact on the paper so we cannot produce carbon copies. It produce less noise, low quality print and inexpensive. It is used in fax machine.

3. Plotter:
A plotter is a device that draws pictures ordiagrams on paper based on commands from a computer. Plotters draw lines using a pen. Pen plotters generally use drum or flat bed paper holders. In a drum plotter the paper is mounted on the surface of a drum.

Here the paper is rotated. But in a flatbed plotter the paper does not move and the pen holding mechanism provides the motion that draws pictures. Plotters are used in engineering applications where precision is needed.

4. Three Dimensional (3D) printer: This device is used to print 3D objects.

Question 4.
Your school got two printers. One dot matrix and one Laser printer through ICT scheme of Central Govt. What is the difference between these two printers? Explain.
Answer:

Laser Printer Dot Matrix Printer
It is non-impact printer It is impact printer
Speed is high Speed is less
Good quality text and Low quality text and very
picture poor quality picture
Less noise More noise
Printing cost is high Printing cost is low
Not possible to take Possible to take carbon
carbon copy copy
Toner is used Ribbon is used

Question 5.
Explain Primary Memory in detail.
Answer:
Primary memory is classified into two, Random Access Memory (RAM) and Read Only Memory (ROM). The primary memory holds the data which is to be processed by the CPU and the set of instructions to be executed next. The CPU can access the instructions in the primary memory only.

1. Random Access Memory (RAM):
RAM is used to store data and instructions needed by the CPU for processing. RAM can be used for both reading and writing of data so it is called Read and Write memory. It is a volatile memory, that is contents of the RAM will be lost when the power is turned off.

The invention of integrated circuits (chips) increased the memory capacity and reduced the size and cost. Static RAM, Dynamic RAM, Synchronous Dynamic RAM (SDRAM) are the various types of RAM.

2. Read Only Memory (ROM):
We can read this memory but we cannot write into this memory. It is a nonvolatile memory, that is its contents will not lost when the power is turned off. This memory is stored in the ROM chip at the time of manufacture ing itself hence it is called firmware.

ROM contains instructions to check the hardware components connected to the system, perform some basic input/output operations (BIOS), initiates loading of essential software. The different categories are PROM, EPROM and EE PROM.

(a) PROM (Programmable Read Only Memory):
It is just like WORM. That means the instructions are write once but read many. But we cannot change the instructions.

(b) EPROM (Erasable Programmable Read Only Memory):
It functions just like PROM. But by using ultraviolet light we can erase the old data and can write new data.

(c) EEPROM (Electrically Erasable Programmable Read Only Memory):
Here instead of ultraviolet light electric signals are used to erase old data and write new data under software control. It is highly expensive than regular ROM chips.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 6.
Explain secondary memory in detail.

OR

To store large volume of data permanently. Which memory is used? Explain.
Answer:
Primary memory has a limited storage capacity and it is not permanent that is why to store large volume of data permanently secondary memory or storage devices are used. They are of many types and they vary in the capacity of storage, speed of data access and media of storage. Nowadays magnetic disks and optical disks are commonly used.

1. Magnetic Disk:
Magnetic disk allows the storage and retrieval for contents of the disk from anywhere at a moderate speed. Magnetic Disks available in various size and storage capacity but the storage media and data access mechanism are similar.

The storage media is circular platters or disks coated with magnetic material. It consists of a spindle capable of rotating with the help of an electrical motor and a read/write head.

(a) Floppy disk:
Floppy means flexible or soft, it uses flexible disk. Its storage capacity is 1,44MB and slower in data transfer rate.

(b) Hard Disk:
Instead of flexible or soft disk it uses rigid material hence the name hard disk. Its storage capacity and data transfer rate are high and low access time. These are more lasting and less error prone. The accessing mechanism and storage media are combined together in a single unit and connect to the mother board via cable.

Therefore we call it as hard disk drive (HDD). It contains one or more rigid platters coated both sides with a special magnetic material and a spindle. Datas are recorded on either surface of the disk except the outer side of last and first disk. Each surface will have one or more read/write heads (fixed head or movable head).

The spindle is attached to a motor that rotates at high speed typically 7200 rotation per minute (rpm). A floppy disk rotates only at 300 rpm.

2. Optical Disk:
The high power laser uses a concentrated, narrow beam of light, which is focuses and directed with lenses, prisms and mirrors for recording data. The optical disks are given below:

(a) Compact Disk Read Only Memory (CDROM):
The data in CDROM is imprinted.by the manufacturers. The user cannot erase or write on the disk but user can only read its contents. CDROM is written in a single continuous spiral unlike magnetic disks that uses concentric circles. Its storage capacity is 700MB.

(b) Erasable Optical Disk:
The disadvantage of CDROM is that we cannot change or erase the contents. But erasable disks can be changed and erased.

(c) Digital Versatile Disk: It is capable of storing upto 4.7GB and more faster.

(d) Blu-ray Disc:
It is used to read and write High Definition video data as well as to store very huge amount of data. While Cd and DVD uses red laser to read and write but it uses Blue-Violet laser, hence the name Blu ray disc. The blue-violet laser has shorter wavelength than a red laser so it can pack more data tightly.

3. Semiconductor storage (Flash memory): It uses EEPROM chips. It is faster and long lasting.

  1. USB flash drive: It is also called thumb drive or pen drive. Its capacity varies from 2 GB to 32 GB.
  2. Flash memory cards: It is used in Camera, Mobile phones, tablets etc to store all types of data.

Question 7.
What do you mean by a computer software? Mention its different classification.

OR

Your friend wants to know more about software. Explain more about different classification.

OR

Your friend told you that COBOL and MS Word are same softwares. Do you agree with him. Explain. What is a software and its classification?
Answer:
A Software is a collection of programs to perform a task. The softwares can be classified into two major groups.

  1. System software
  2. Application software

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System 4
1. System Software:
It is a collection of programs used to manage system resources and control its operations. It is further classified into two.
(a) Operating System
(b) Language Processor
(a) Operating System:
It is collection of programs which acts as an interface between user and computer. Without an operating system computer cannot do anything. Its main function is make the computer usable and use hardware in an efficient manner,
eg: WindowsXP, Windows Vista, Linux, Windows 7, etc.

(b) Language Processes:
We know that a program is a set of instructions. The instructions to the computer are written in different languages. They are high level language (HLL) and low level language. In HLL english like statements are used to write programs. They are C, COBOL, PASCAL, VB, Java etc. HLL is very easy and can be easily understood by the human being.

Low level language are classifed into Assembly Language and Machine Language. In assembly language mnemonics (codes) are used to write programs
Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System 5
In Machine Language 0’s and 1’s are used to write program. It is very difficult but this is the only language which is understood by the computer. Usually programmers prefer HLL to write programs because of its simplicity. But computer understands only machine language. So there is a translation needed. The program which perform this job are language processors.

The different language processors are given below:
1. Assembler:
This converts programs written in assembly language into machine language.

2. Interpreter:
This converts a HLL program into machine language by converting and executing it line by line. The first line is converted if there is no error it will be executed otherwise you have to correct it and the second line and so on.

3. Compiler:
It is same as interpreter but there is a difference, it translate HLL program into machine language by converting all the lines at a time. If there is no error then only it will executed.

2. Application Software:
Programs developed to serve a particular application is known as application software, eg:- MS Office, Compression Utility, Tally etc.
Application software can further be sub divided into three categories.
(a) Packages
(b) Utilities
(c) Customized Software

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

(a) Packages:
Application software that makes the computer useful for people to do every task. Packages are used to do general purpose application.
They are given below:
1. Word Processes:
This is used for creation and modification of text document. That means a word processor helps the people to create, edit and format a textual data with less effort and maximum efficiency.

By using word processor we can change font and font size of character, change alignment (left, right, center and justify), check spelling and grammar of the whole document etc. eg: MS Word.

2. Spread Sheets:
It contains data or information in rows and columns and can perform calculation (Arithmetic, Relational and logi¬cal operation). It helps to calculate results of a particular formula and the formula can apply different cells (A cell is the intersection of a row and column. Each column carries an alphabet for its name and row is numbered).

It is used to prepare budgets, balance sheets, P & L account, Payroll etc. We can easily prepare graphs and charts using data entered in a worksheet. A file is a workbook that contains one or more worksheets, eg: MS Excel is a spreadsheet software.

3. Presentation and Graphics:
You can present your idea with sound and visual effects with the help of presentation software by preparing slides. The application software that manipulate visual images is known as graphics software. eg: MS Power Point is a presentation package.

4. Data base package:
Database is a collection of large volume of data. DBMS is a set of programs that manages the datas are for the centralised control of data such that creating new records to the database, deleting, records whenever not wanted from the database and modification of the existing database. Example for a DBMS is MS Access.

(b) Utilities: Utilities are programs which are designed to assist computer for its smooth functioning.
The utilities are given below:

1. Text editor:
It is used for creating and editing text files.

2. Backup utility:
Creating a copy of files in another location to protect them against loss, if your hard disk fails or you accidently overwrite or delete data.

3. Compression Utility:
It is used to reduce the size of a file by using a program and can be restored to its original form when needed.

4. Disk Defragmenter:
It is used to speeds up disk access by rearranging the files that are stored in different locations as fragments to contiguous memory and free space is consolidated in one contiguous block.

5. Vims Scanner:
It is a program called antivirus software scans the disk for viruses and removes them if any virus is found.

(c) Customised software:
It is collection of programs which are developed to meet user needs to serve a particular application. It is also called tailor made software.

Question 8.
To use a computer not only the hardware but also software are required. Explain the classification of software.
Answer:
Software: The set of instructions that tell the hardware how to perform a task is called software. Without software computer cannot do anything. Two types System s/w and Application s/w System software.
It is a collection of programs used to manage system resources and control its operations. It is further classified into two.

  1. Operating System
  2. Language Processor

1. Operating System: It is collection of programs which acts as an interface between user and computer. Without an operating system computer cannot do anything. Its main function is make the computer usable and use hardware in an efficient manner, eg: Windows XP, Windows Vista, Linux, Windows 7, etc.
Major functions of an operating System:

  • Process management: It includes allocation and de allocation of processes(program in execution) as well as scheduling system resources in efficient manner.
  • Memory management: It takes care of allocation and de allocation of memory in efficient manner
  • File management: This includes organizing, naming , storing, retrieving, sharing , protecting . and recovery of files.
  • Device management: Many devices are connected to a computer so it must be handled efficiently.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

2. Language Processes:
We know that a program is a set of instructions. The instructions to the computer are written in different languages. They are high level language (HLL) and low level language. In HLL English like statements are used to write programs. They, are C, C++, COBOL, PASCAL, VB, Java etc. HLL is very easy and can be easily understood by the human being.

Low level language are classified into Assembly Language and Machine Language.
In assembly language mnemonics (codes) are used to write programs
Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System 6
In Machine Language 0’s and 1’s are used to write program. It is very difficult but this is the only language which is understood by the computer. Usually programmers prefer HLL to write programs because of its simplicity. But computer understands only machine language. So there is a translation needed. The program which perform this job are language processors.

The different language processors are given below:
1. Assembler:
This converts programs written in assembly language into machine language.

2. Interpreter:
This converts a HLL program into machine language by converting and executing it line by line. The first line is converted if there is no error it will be executed otherwise you have to correct it and the second line and so on.

3. Compiler:
It is same as interpreter but there is a difference it translate HLL program into machine language by converting all the lines at a time. If there is no error then only it will executed.

Application Software:
Programs developed to serve a particular application is known as application software, eg:- MS Office, Compression Utility, Tally etc. Application software can further be sub-divided into three categories.
(a) Packages
(b) Utilities
(c) Customized Software

(a) Packages:
Application software that makes the computer useful for people to do every task. Packages are used to do general purpose application.
They are given below:

1. Word Processes:
This is used for creation and modification of text document. That means a word processor helps the people to create, edit and format a textual data with less effort and maximum efficiency. By using word processor we can change font and font size of character, change alignment (left, right, center and justify), check spelling and grammar of the whole document etc.
eg: MS Word.

2. Spread Sheets:
It contains data or information in rows and columns and can perform calculation (Arithmetic, Relational and logical operation). It helps to calculate results of a particular formula and the formula can apply different cells (A cell is the intersection of a row and column.

Each column carries an alphabet for its name and row is numbered). It is used to prepare budgets, balance sheets, P & L account, Pay roll etc. We can easily prepare graphs and charts using data entered in a worksheet. A file is a work book that contains one or more work sheets,
eg : MS Excel is a spread sheet software.

3. Presentation and Graphics:
You can present your idea with sound and visual effects with the help of presentation software by preparing slides. The application software that manipulate visual images is known as graphics software.
eg: MS Power Point is a presentation package.

4. Data base package:
Data base is a collection of large volume of data. DBMS is a set of programs that manages the datas are for the centralized control of data such that creating new records to the database, deleting, records whenever not wanted from the database and modification of the existing database. Example for a DBMS is MS Access.

DTP Packages: DTP means Desk Top Publishing. By using this we can create books, periodicals, magazines etc. easily and fastly. Now DTP packages are used to create in Malayalam also,
eg: PageMaker.

5. Utilities:
Utilities are programs which are designed to assist computer for its smooth functioning.
The utilities are given below:

  1. Text editor: It is used for creating and editing text files.
  2. Backup utility: Creating a copy of files in another location to protect them against loss, if your hard disk fails or you accidentally overwrite or delete data.
  3. Compression Utility: It is used to reduce the size of a file by using a program and can be restored to its original form when needed.
  4. Disk Defragmenter: It is used to speeds up disk access by rearranging the files that are stored in different locations as fragments to contiguous memory and free space is consolidated in one contiguous block.
  5. Virus Scanner: It is a program called antivirus software scans the disk for viruses and removes them if any virus is found.

(c) Specific purpose software (Customized software):
It is collection of programs which are developed to meet user needs to serve a particular application. It is also called tailor made software.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 9.
Describe the different types of memories and memory devices in computer with features and examples.
Answer:
Memory:
Storage Unit(Memory Unit): A computer has huge storage capacity. It is used to store data and instructions before starts the processing. Secondly it stores the intermediate results and thirdly it stores information(processed data), that is the final results before send to the output unit(Visual Display Unit, Printer, etc)
Memory measuring units are given below.

  • 1 bit = 1 or 0(Binary Digit)
  • 4 bits = 1 Nibble
  • 8 bits = 1 Byte
  • 1024 Bytes = 1 KB(Kilo Byte)
  • 1024 KB = 1 MB(MegaByte)
  • 1024 MB = 1 GB(Giga Byte)
  • 1024 GB = 1 TB(Tera Byte)
  • 1024 TB = 1 PB(Peta Byte)

Two Types of storage unit:
1. Primary Storage alias Main Memory:
It is further be classified into Two Random Access Memory (RAM) and Read Only Memory(ROM). The one and only memory that the CPU can directly access is the main memory at a very high speed.

It is expensive hence storage capacity is less. RAM is volatile(when the power is switched off the content will be erased) in nature but ROM is non volatile(lt is permanent). In ROM a “boot up” program called BIOS(Basic Input Output System) is stored to “boots up” the computer when it switched on. Some ROMs are given below.

  1. PROM(Programmable ROM): It is programmed at the time of manufacturing and cannot be erased.
  2. EPROM (Erasable PROM): It can be erased and can be reprogrammed using special electronic circuit.
  3. EEPROM (Electrically EPROM): It can be erased and rewritten electrically

Cache Memory:
The processor is a very high speed memory but comparatively RAM is slower than Processor. So there is a speed mismatch between the RAM and Processor, to resolve this a high speed memory is placed in between these two this memory is called cache memory. Commonly used cache memories are Level(L1) Cache(128 KB), L2(1 MB),L3(8 MB), L4(128MB).

2. Secondary Storage alias Auxiliary Memory :
Because of limited storage capacity of primary memory its need arises. When a user saves a file, it will be stored in this memory hence it is permanent in nature and its capacity is huge. Eg: Hard Disc Drive(HDD), Compact Disc(CD), DVD, Pen Drive, Blu Ray Disc etc.

(a) Magnetic storage device:
It uses plastic tape or metal/plastic discs coated with magnetic material.
Hard Disk: Instead of flexible or soft disk it uses rigid material hence the name hard disk. Its storage capacity and data transfer rate are high and low access time.

These are more lasting and less error prone. The accessing mechanism and storage media are combined together in a single unit and connect to the mother board via cable.

(b) Optical storage device:
Optical Disk: The high power laser uses a concentrated, narrow beam of light, which is focuses and directed with lenses, prisms and mirrors for recording data. This beams burns very very small spots in master disk, which is used for making molds and these molds are used for making copies on plastic disks.

A thin layer of aluminium followed by a transparent plastic layer is deposited on it. The holes made by the laser beam are called pits, interpreted as bit 0 and unburned areas are called lands interpreted as bit 1. Lower power laser beam is used to retrieve the data.

1. DVD(Digital Versatile Disc):
It is similar to CD but its storage capacity is much higher. The capacity of a DVD starts from 4.7 GB

2. Blu-ray Disc:
It is used to read and write High Definition video data as well as to store very huge amount of data. While Cd and DVD uses red laserto read and write but it uses Blue-Violet laser, hence the name Blu ray disc. The blue violet laser has shorter wave length than a red laser so it can pack more data tightly.

3. Semiconductor storage (Flash memory):
It uses EEPROM chips. It is faster and long lasting.

  • USB flash drive: It is also called thumb drive or pen drive. Its capacity varfes from 2 GB to 32 GB.
  • Flash memory cards: It is used in Camera, Mobile phones, tablets etc to store all types of data.

Question 10.
Explain how e-Waste creates environmental issues. Usually there are four methods for e-Waste dispoal. Which one is the most effective? Why? Write a slogan to aware the public about e-Waste hazards.
Answer:
e-Waste disposal methods:

  1. Reuse: Reusability has an important role of e-Waste management and can reduce the volume of e-Waste
  2. Incineration: It is the process of burning e-Waste at high temperature in a chimney
  3. Recycling of e-Waste: It is the process of making new products from this e-Waste.
  4. Land filling: It is used to level pits and cover by thick layer of soil.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 3 Components of the Computer System

Question 11.
With the help of a block diagram, explain the functional units of a computer.
Answer:
Functional units of computer:
A computer is not a single unit but it consists of many functional units(intended to perform jobs) such as Input unit, Central Processing Unit(ALU and Control Unit), Storage (Memory) Unit and Output Unit.
1. Input Unit:
Its aim is to supply data (Alphanumeric, image , audio, video, etc.) to the computer for processing. The Input devices are keyboard, mouse, scanner,mic, camera,etc

2. Central Processing Unit (CPU):
It is the brain of the computer and consists of three components

  • Arithmetic Logic Unit(ALU): As the name implies it performs all calculations and comparison operations.
  • Control Unit(CU): It controls overall functions of a computer
  • Registers: It stores the intermediate results temporarily.

3. Storage Unit(Memory Unit):
A computer has huge storage capacity. It is used to store data and instructions before starts the processing. Secondly it stores the intermediate results and thirdly it stores information(processed data), that is the final results before send to the output unit(Visual Display Unit, Printer, etc)

Two Types of storage unit
(a) Primary Storage alias Main Memory:
It is further be classified into Two- Random Access Memory(RAM) and Read Only Memory(ROM). The one and only memory that the CPU can directly access is the main memory at a very high speed.

It is expensive hence storage capacity is less. RAM is volatile (when the power is switched off the content will be erased) in nature but ROM is non volatile(lt is permanent)

(b) Secondary Storage alias Auxiliary Memory:
Because of limited storage capacity of primary memory its need arises. When a user saves a file, it will be stored in this memory hence it is permanent in nature and its capacity is huge. eg: Hard Disc Drive(HDD), Compact Disc(CD), DVD, Pen Drive, Blu Ray Disc etc.

4. Output Unit:
After processing the data we will get information as result, that will be given to the end user through the output unit in a human readable form. Normally monitor and printer are used.

Plus One Maths Chapter Wise Questions and Answers Chapter 12 Introduction to Three Dimensional Geometry

Students can Download Chapter 12 Introduction to Three Dimensional Geometry Questions and Answers, Plus One Maths Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.

Kerala Plus One Maths Chapter Wise Questions and Answers Chapter 12 Introduction to Three Dimensional Geometry

Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers

Question 1.
Prove by using distance formula that the A(1, 2, 3), B(-1, -1, -1) and C(3, 5, 7) are collinear.
Answer:
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 1
Now BC = AB + AC
Thus A, B, C are collinear.

Plus One Maths Chapter Wise Questions and Answers Chapter 12 Introduction to Three Dimensional Geometry

Question 2.
Verify the following: (3 score each)

  1. (0, 7, -10), (1, 6, -6) and (4, 9, -6) are the vertices of an isosceles triangle.
  2. (0, 7, 10), (-1, 6, 6) and (-4, 9, 6) are the vertices of a right angled triangle.
  3. (-1, 2, 1), (1, -2, 5), (4, -7, 8) and (2, -3, 4) are the vertices of a parllelogram.

Answer:
1. Let A(0, 7, -10), B(1, 6, -6) and C(4, 9, -6) be the two points.
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 2
Now AB = BC, thus ABC is an isosceles triangle.

2. Let A(0, 7, 10), B(-1, 6, 6) and C(-4, 9, 6) be the two points.
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 3
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 4
Now AC2 = AB2 + BC2, thus ABC is a right triangle.

3. Let A(-1, 2, 1), B(1, -2, 5), C(4, -7, 8) and D(2, -3, 4) be the two points.
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 5
Now AB = CD, BC = AD, AC ≠ BD, thus A, B, C, D are vertices of a parallelogram.

Plus One Maths Chapter Wise Questions and Answers Chapter 12 Introduction to Three Dimensional Geometry

Question 3.
Find the equation of set points which are equidistant from the points (1, 2, 3) and (3, 2, -1).
Answer:
Let P(x,y,z) be any point which is equidistant from the point A(1, 2, 3) and B (3, 2, -1).
Given; PA = PB
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 6
(x – 1)2 + (y – 2)2 + (z – 3)2
= (x – 3)2 + (y – 2)2 + (z + 1)2
= x2 – 2x + 1 + y2 – 4y + 4 + z2 – 6z + 9
= x2 – 6x + 9 + y2 – 4y + 4 + z2 + 2z + 1 – 2x + 14 – 6z = -6x + 14 + 2z
⇒ 4x – 8z = 0
⇒ x – 2z = 0.

Question 4.
Find the coordinate of the point which divides the line segment joining the points (3, -2, 5) and (3, 4, 2) in the ratio 2:1 (3 score each)

  1. 2:1 internally
  2. 2:1 externally

Answer:
1. Let P(x, y, z) be any point which divides the line segment joining points A(3, -2, 5) and B (3, 4, 2) in the ratio 2:1 internally.
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 7
Therefore coordinates of P are (3, 2, 3).

2. Let P(x, y, z) be any point which divides the line segment joining points A(3, -2, 5) and B (3, 4, 2) in the ratio 2:1 externally.
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 8
Therefore coordinates of P are (3, 10, -1).

Plus One Maths Chapter Wise Questions and Answers Chapter 12 Introduction to Three Dimensional Geometry

Question 5.
Find the ratio in which the line joining the points (1, 2, 3) and (-3, 4, -5) is divided by the xy-plane.
Answer:
Let the line joining the points A(1, 2, 3) and B(-3, 4, -5) is divided by the xy-plane in the ratio k:1.
Then the coordinate
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 9
Since the point lies on xy-axis, we have;
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 10
Thus the required ratio is \(\frac{3}{5}\); ie, 3:5.

Question 6.
Find the coordinates of the points which trisect the line segment joining the points P(4, 2, -6) and Q (10, -16, 6).
Answer:
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 11
Let R and S be two points which trisect the line join of PQ. Therefore PR = RS = SQ Then coordinate of R is
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 12
= (6, -4, -2)
Then coordinate of S is
Plus One Maths Introduction to Three Dimensional Geometry Three Mark Questions and Answers 13
= (8, -10, 2).

Plus One Maths Introduction to Three Dimensional Geometry Practice Problems Questions and Answers

Question 1.
Find the distance between the following pair of points: (1 score each)

  1. (2, 3, 5) and (4, 3, 1)
  2. (-3, 7, 2) and (2, 4, -1)
  3. (-1, 3, -4) and (1, -3, 4)

Answer:
1. Let A(2, 3, 5) and B(4, 3, 1) be the two points.
Plus One Maths Introduction to Three Dimensional Geometry Practice Problems Questions and Answers 14

2. Let A(-3, 7, 2) and B(2, 4, -1) be the two points.
Plus One Maths Introduction to Three Dimensional Geometry Practice Problems Questions and Answers 15

Plus One Maths Chapter Wise Questions and Answers Chapter 12 Introduction to Three Dimensional Geometry

3. Let A(-1, 3, -4) and B(1, -3, 4) be the two points.
Plus One Maths Introduction to Three Dimensional Geometry Practice Problems Questions and Answers 16

Plus One Maths Chapter Wise Questions and Answers Chapter 6 Linear Inequalities

Students can Download Chapter 6 Linear Inequalities Questions and Answers, Plus One Maths Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.

Kerala Plus One Maths Chapter Wise Questions and Answers Chapter 6 Linear Inequalities

Plus One Maths Linear Inequalities Three Mark Questions and Answers

Question 1.
Solve the following inequalities.

  1. \(\frac{1}{2}\left(\frac{3 x}{5}+4\right) \geq \frac{1}{3}(x-6)\)
  2. \(\left(\frac{2 x-1}{3}\right) \geq \frac{(3 x-2)}{4}-\frac{(2-x)}{5}\) (3 score each)

Answer:
1. Given;
Plus One Maths Linear Inequalities Three Mark Questions and Answers 1
⇒ 3(3x + 20) ≥ 10(x – 6)
⇒ 9x + 60 ≥ 10x – 60
⇒ 9x – 10x ≥ -60 – 60
⇒ -x ≥ -120 ⇒ x ≤ 120

2. Given;
Plus One Maths Linear Inequalities Three Mark Questions and Answers 2
⇒ 20(2x -1) ≥ 3[15x – 10 – 8 + 4x]
⇒ 40x – 20 ≥ 45x – 54 + 12x
⇒ 40x – 20 ≥ 57x – 54
⇒ 40x – 57x ≥ -54 + 20
⇒ -17x ≥ -34 ⇒ x ≤ 2

Plus One Maths Chapter Wise Questions and Answers Chapter 6 Linear Inequalities

Question 2.
1. Which of the following sets of inequality represent the second quadrant? (1)
(a) x < 0, y < 0
(b) x > 0, y > 0
(c) x < 0, y > 0
(d) x > 0, y < 0
2. Write the system of inequalities that represents the shaded rectangle in the figure given below: (2)
Plus One Maths Linear Inequalities Three Mark Questions and Answers 3
Answer:
1. (a) x < 0, y < 0

2. The shaded figure is a rectangle. The side parallel to x axis are y = -1 and y = 1. The side perpendicular to x axis are x = 2 and x = -2. Hence the inequality that represent the shaded region are
-2 ≤ x ≤ 2; -1 ≤ y ≤ 1.

Plus One Maths Chapter Wise Questions and Answers Chapter 6 Linear Inequalities

Question 3.
Find all pairs of consecutive even positive integers both of which are smaller than10 such that their sum is less than 23.
Answer:
Consecutive even positive integers be x and x + 2. Then, x + x + 2 < 23; x + 2 < 10
⇒ 2x < 23 – 2; x < 10 – 2
⇒ x < \(\frac{21}{2}\) = 10.5; x < 8
⇒ 8 < x ≤ 10 Therefore x can take values 9, 10. Hence the pairs are (9, 10), (10, 9).

Question 4.
The longest side of a triangle is 3 times the shortest side and the third side is 2 cm shorter than the longest side. If the perimeter of the triangle is at least 61 cm, find the minimum length of the shortest side.
Answer:
Let the shortest side is x, then;
Longest side = 3x;
Third side = Longest side – 2 = 3x – 2
Perimeter = 3x + 3x – 2 + x ≥ 61 ⇒ 7x – 2 ≥ 61
⇒ 7x ≥ 61 + 2 ⇒ x ≥ \(\frac{63}{7}\) = 9.

Plus One Maths Linear Inequalities Four Mark Questions and Answers

Question 1.
Solve the following system of inequalities graphically.

  1. 2x – y > 1; x – 2y < -1
  2. x + y ≤ 9; y > x; x ≥ 0
  3. x – 2y ≤ 3; 3x + 4y ≥ 12; x ≥ 0, y ≥ 1
  4. 2x + y – 3 ≥ 0; x – 2y + 1 ≥ 0; y ≤ 3 (4 score each)

Answer:
1. 2x – y > 1; x – 2y < -1
Plus One Maths Linear Inequalities Four Mark Questions and Answers 4
Plus One Maths Linear Inequalities Four Mark Questions and Answers 5

Plus One Maths Chapter Wise Questions and Answers Chapter 6 Linear Inequalities

2. x + y ≤ 9; y > x ⇒ x – y < 0
Plus One Maths Linear Inequalities Four Mark Questions and Answers 6
Plus One Maths Linear Inequalities Four Mark Questions and Answers 7

3. x – 2y ≤ 3; 3x + 4y ≥ 12
Plus One Maths Linear Inequalities Four Mark Questions and Answers 8
Plus One Maths Linear Inequalities Four Mark Questions and Answers 9

Plus One Maths Chapter Wise Questions and Answers Chapter 6 Linear Inequalities

4. 2x + y ≥ 3; x – 2y ≤ -1
Plus One Maths Linear Inequalities Four Mark Questions and Answers 10
Plus One Maths Linear Inequalities Four Mark Questions and Answers 11

Plus One Maths Linear Inequalities Practice Problems Questions and Answers

Question 1.
Solve the following inequalities.

  1. 4x + 3 < 5x + 7
  2. 3(x – 1) ≤ 2(x – 3) (1 score each)

Answer:
1. Given; 4x + 3 < 5x + 7
⇒ 4x – 5x < 7 – 3 ⇒ -x < 4 ⇒ x > -4.

2. Given; 3(x – 1) < 2(x – 3)
⇒ 3x – 3 ≤ 2x – 6 ⇒ 3x – 2x ≤ -6 + 3
⇒ x ≤ -3.

Plus One Maths Chapter Wise Questions and Answers Chapter 6 Linear Inequalities

Question 2.
Solve the inequality \(\frac{3(x-2)}{5} \leq \frac{5(2-x)}{3}\).
Answer:
Given; \(\frac{3(x-2)}{5} \leq \frac{5(2-x)}{3}\)
⇒ 9(x – 2) ≤ 25(2 – x)
⇒ 9x – 18 ≤ 50 – 25x
⇒ 9x + 25x ≤ 50 + 18
⇒ 34x ≤ 68 ⇒ x ≤ 2.

Question 3.
Show the solution of each inequality on a number line.

  1. 4x + 3 < 6x + 7
  2. 5x – 3 ≥ 3x – 5
  3. 3(1 – x) < 2(x + 4)
  4. 2 – 3x < 2(x + 6)
  5. -3 ≤ 3 – 2x < 6 (2 score each)

Answer:
1. Given; 4x + 3 < 6x + 7 ⇒ 4x – 6x < 7 – 3
⇒ -2x < 4 ⇒ x > -2
Plus One Maths Linear Inequalities Practice Problems Questions and Answers 12

2. Given; 5x – 3 > 3x – 5 ⇒ 5x – 3x ≥ -5 + 3
⇒ 2x ≥ -2 ⇒ x ≥ 1.
Plus One Maths Linear Inequalities Practice Problems Questions and Answers 13

3. Given; 3(1 – x) < 2(x + 4) ⇒ 3 – 3x < 2x + 8
⇒ -3x – 2x < 8 – 3 ⇒ -5x < 5 ⇒ x > -1.
Plus One Maths Linear Inequalities Practice Problems Questions and Answers 14

4. Given; 2 – 3x < 2(x + 6) ⇒ 2 – 3x < 2x + 12
⇒ -3x – 2x < 12 – 2 ⇒ -5x < 10 ⇒ x > -2
Plus One Maths Linear Inequalities Practice Problems Questions and Answers 15

5. Given; -3 ≤ 3 – 2x < 6
⇒ -3 ≤ 3 – 2x; 3 – 2x < 6
⇒ -3 – 3 ≤ -2x; -2x < 6 – 3
⇒ -6 ≤ -2x; -2x < 3 ⇒ 3 ≥ x; x > \(-\frac{3}{2}\) ⇒ \(-\frac{3}{2}\) < x ≤ 3
Plus One Maths Linear Inequalities Practice Problems Questions and Answers 16

Plus One Maths Chapter Wise Questions and Answers Chapter 6 Linear Inequalities

Question 4.
The marks obtained by a student of class XI in first and second terminal examination are 62 and 48, respectively. Find the minimum marks he should get in the annual examination to have an average of at least 60 marks.
Answer:
Let x denote the mark obtained by the student in Class XI examination, then;
\(\frac{62+48+x}{3}\) ≥ 60 ⇒ 110 + x ≥ 1800 ⇒ x ≥ 70.

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Students can Download Chapter 7 Bill of Exchange Questions and Answers, Plus One Accountancy Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.

Kerala Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Plus One Accountancy Bill of Exchange One Mark Questions and Answers

Question 1.
The Maker of the bill of exchange is called the ……….
(a) Drawer
(b) Drawee
(c) Payee
Answer:
(a) Drawer.

Question 2.
Bill of exchange before its acceptance is called is ……………
(a) Bill
(b) Promissory Note
(c) Draft
Answer:
(c) Draft.

Question 3.
When a discounted bill is dishonoured, the ………… account is credited in the books of the drawer,
(a) Bank
(b) Drawee
(c) Payee
Answer:
(a) Bank

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Question 4.
A bill is noted when it is
(a) Dishonoured
(b) Honoured
(c) Discounted
(d) Accepted
Answer:
(a) Dishonoured

Question 5.
The process of transferring the ownership of the bill is called
(a) Acceptance
(b) Negotiation
(c) Endorsement
Answer:
(c) Endorsement

Question 6.
The credit instrument which contains a promise made by the debtor to pay a certain sum of money for value received is
(a) Bill of Exchange
(b) Debenture
(c) Promissory Note
(d) Equity Share
Answer:
(c) Promissory Note

Question 7.
A bill of exchange is an Instrument.
Answer:
Negotiable

Question 8.
………………. days of grace are allowed in case of time bills for calculating the date of maturity.
Answer:
Three

Question 9.
If the date of maturity of a bill is on a holiday then the bill will mature on ………….. day.
Answer:
The Previous day

Question 10.
When noting charges are paid finally the amount will
be recovered from
Answer:
Drawee.

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Question 11.
Complete the following on the basis of hints given

  1. Dishonour of discounted bill – An entry in the book of drawer.
  2. ………………………………………………. – No entry in the book of drawer.

Answer:
Honouring of discounted bill.

  1. Noting charges incurred – When bill is dishonoured.
  2. Rebate is allowed – …………………….

Answer:
When bill is honoured before due date.

Question 12.
Bill of exchange in Indian languages is called
Answer:
Hundi.

Question 13.
The person to whom the amount mentioned in the promissory note is payable is known as ………………..
Answer:
Promisee.

Question 14.
A person who endorse the promissory note in favour of another is known as ………………..
Answer:
Endorser

Question 15.
In a promissory note, the person who makes the promise to pay is called ……………………
Answer:
Promissor.

Question 16.
Bill of exchange is drawn on the ………….
Answer:
Debtor/Drawee.

Question 17.
The person to whom payment of the bill is to be made is known as ……………….
Answer:
Payee

Question 18.
A promissory note does not require ………..
Answer:
Acceptance.

Question 19.
Making payment of the bill of exchange before the due date is called …………..
Answer:
Retiring of the bill

Question 20.
A bill of exchange accepted without consideration, just to oblige a friend is known as
Answer:
Accommodation Bill

Question 21.
If the proceeds of the bill of exchange is to be paid after a particular period is called …………
Answer:
Time Bill.

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Question 22.
Find the odd one and state the reasons.

  1. Bill of exchange, cheque, promissory note, fixed deposit receipt.
  2. Drawer, Drawee, Payee, Endorser.

Answer:

  1. Fixed Deposit Receipt – Others are negotiable instruments
  2. Drawee – Others may be the same person

Question 23.
On the date of maturity, Arun (acceptor) requested to Santhosh (drawer) to cancel the old bill and draw a new bill upon him for a period of 2 months. Santhosh agrees to this. It is a case of ………………
Answer:
Renewal of bill

Plus One Accountancy Bill of Exchange Two Mark Questions and Answers

Question 1.
A bill of exchange must contain “an unconditional promise to pay.” Do you agree with a statement?
Answer:
No. The bill of exchange contains an unconditional order to pay a certain amount on an agreed date.

Question 2.
Define Bill of exchange.
Answer:
According to the Negotiable Instruments Act, 1881 a bill of exchange is “an instrument in writing containing an unconditional order, signed by the maker, directing a certain person to pay a certain sum of money only to, or to the order of a certain person, or to the bearer of the instrument.”

Question 3.
What are the features of bill of exchange?
Answer:
Following are the essential features of a bill of exchange.

  1. It must be in writing.
  2. It must be an order to pay, and not a request to pay.
  3. No condition should be attached to the order.
  4. The drawer must sign the bill
  5. The order must be for the payment of money only.
  6. It should be properly stamped.
  7. The amount mentioned in the bill may be made payable either on demand or after the expiry of a ‘stipulated period.

Question 4.
Who are.the parties to a bill of exchange ?
Answer:
There are three parties to a bill of exchange:

  1. Drawer – He is the creditor who draws a bill of exchange upon the debtor.
  2. Drawee – He is the person upon whom the bill of exchange is drawn. He is the purchaser of the goods on credit and the debtor.
  3. Payee – He is the person to whom payment of the bill is to be made on the maturity date. The drawer and the payee can be one party when payment is to be made to the drawer.

Question 5.
What are days of grace?
Answer:
Three extra days over the nominal due date legally given to the acceptor of a bill to make payment are called days of grace. Days of grace are allowed only in the case of time bills.

Question 6.
Calculate the maturity date of the following bill.

  1. Drawn on January 5th for three months.
  2. Drawn on May 1st for 4 months.

Answer:
1.

  • January 5th to February 5th
  • February 5th to March 5th
  • March 5th to April 5th
  • April 5th + 3 days of grace = April 8th

2.

  • May 1st – June 1st
  • June 1st – July 1st
  • July 1st – August 1st
  • August 1st – September 1st
  • September 1st + 3 days of grace = September 4th

Question 7.
What do you mean by Endorsement?
Answer:
An endorsement is a written order on the back of the instrument by the payee or the holder, for transferring his right to another person. The person who makes the endorsement is called endorser and in whose favour the endorsement is made is called the endorsee.

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Question 8.
What is an Accommodation Bill?
Answer:
A bill of exchange and Promissory note may be used for raising funds temporarily. Such a bill is called an ‘accommodation bill’ as it is accepted by the drawee to accommodate the drawer. These are drawn and accepted without consideration with a view to provide funds to one or more parties. There is no trade or debtor-creditor pfifationsip between parties. It is also known as ‘kite bill’ or ‘Wind bill’.

Question 9.
Ram received a bill from Anil on 1/7/2009 for 3 months for Rs. 4,000. Later the bill has been endorsed to Kumar. In this statement identify the parties involved in terms of drawer, drawee endorser and payee.
Answer:

  • Drawer – Ram
  • Drawee – Anil
  • Payee – Kumar
  • Endorsee – Kumar

Question 10.
Manu purchased goods on credit from Kumar for Rs. 40,0 on 1st April 2009. On the same date Kumar draws a bill for 2 months and got it accepted by Manu. What are the options available to Kumar in dealing with the bill?
Answer:
The following options are available to deal with the bill.

  1. He can retain the bill till the date of maturity.
  2. He can get the bill discounted through the bank.
  3. He can endorse the bill in favour of his creditor.
  4. He may sent the bill for collection to the bank.

Question 11.
Mr. Mohan holds a bill of exchange. He approaches a bank to receive the amount of bill before the maturity date. Does he get the money? Write your comments,
Answer:
If the drawer of the bill needs cash immediately or before the maturity date he can discount the bill with the bank. Discounting of the bill means encashing the bill with the banker on the security of the bill before the maturity date. The banker will deduct a certain sum from the bill amount as discount and pays the balance to the holder. The bank will present the bill to the drawee on the due date and get the payment of the bill.

Question 12.
Explain the term “Noting”
Answer:
When a bill of exchange is dishonoured due to nonpayment, it is usual to get it ‘noted’, to establish the matter of dishonour legally. The noting is done by the “Notary public”, who is an officer appointed by the Government for this purpose. Noting authenticates the facts of dishonour.

For providing this service, a number of fees is charged which is called “Noting charges” Noting charges either paid by the holder or any other parties should be borne by the acceptor in the absence of any agreement.

Question 13.
What do you mean by ‘Retiring of Bill’?
Answer:
The acceptor can pay the amount of the bill before its due date. The process of paying the amount of the bills payable before the due date is called retiring the bill. In such case, the holder usually allows some discount to the acceptor of bill. Such a discount is called “rebate on retired bill”. The amount of rebate depends on the period that the bill has yet to run.

Question 14.
What do you mean by Renewal of Bills?
Answer:
process of drawing and accepting a new bill by cancelling the old bill is called renewal of a bill. It is a granting of extension of credit to the acceptor. When this is done the acceptor may have to pay interest for the extended period of credit. It is paid in cash or may be included in the amount of the new bill.

Question 15.
On 1.1.2005 Raju sold goods to Anil for Rs. 20,000/ – and draw upon him a bill for 2 months. Anil accepted the bill and returned it to Raju. Later Raju endorsed the bill to Tom. On the date of maturity the bill was dishonoured.
Give advice to Tom, regarding the steps to be undertaken immediately after the dishonour.
Answer:
1. The holder of the bill, Tom should send a notice of dishonour to the drawer, Raju within a reasonable time. Otherwise, the other parties of the bill may deny their liability.

2. When the bill is dishonoured it is better to get the fact noted with a Notary public.

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Question 16.
Identify the endorser, endorsee and type of endorsement from the following
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 1
Answer:

  • Endorser – Santhosh
  • Endorsee – Arunkumar
  • Type – Conditional Endorsement

Plus One Accountancy Bill of Exchange Three Mark Questions and Answers

Question 1.
Define promissory Note and Point out its Features.
Answer:
According to the Negotiable Instruments Act 1881, a promissory note is “an instrument in writing containing an unconditional undertaking, signed by the maker, to pay a certain sum of money only to or to the order of a certain person, or to the bearer of the instrument.”
The following are the features of promissory note

  1. It must be in writing
  2. It must contain an unconditional promise to pay.
  3. It must be signed by the maker
  4. The person to whom payment is to be made must also be certain.
  5. The amount payable must be certain.
  6. It should be properly stamped.

Question 2.
Who are the parties to a promissory note:
Answer:
There are two parties to a promissory note.
1. The maker or the promisor:
He is the person who makes or draws the promissory notable is the debtor.

2. The payee or the promisee:
He is a person in whose favour the promissiory note is drawn.

Question 3.
Syam sold goods to Anil on credit for Rs. 3,000, on 10th April 2003. He drew a bill on Anil for the amount at 3 months after date. Anil accepted the same and returned it to syam. At maturity, he met his obligation. Pass journal entries in the books of both parties.
Answer:
Book of Syam (Drawer) Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 2
Book of Anil [Drawee] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 3

Question 4.
Haridas discounts a bill for Rs. 10,000 with his banker on 4th February, 2007. The bill was drawn on 1st January for Four months. The discount rate was 12%. p.a. write Journal entries in the book of Haridas.
Answer:
Book of Haridas [Drawer] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 4
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 5
Note: Calculation of discount
Discount = 10.000 × 12/100 × 3/12 = 300 It may be noted that discount has been charged for three months and not for 4 months because the bank will have to wait for 3 months to get the payment of bill on the due date.

Question 5.
From the given specimen of a promissory note identify:-
a) Promisor
b) Promisee
c) Consideration
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 6
Answer:
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 7

Plus One Accountancy Bill of Exchange Four Mark Questions and Answers

Question 1.
On January 1st, 2006, Ramesh sold goods worth ₹2,000 to Kannan and drew abill for the amount for 3 months. Kannan accepted the bill and returned it to Ramesh. Ramesh endorsed the bill in favour of Jayan, on 6th January. The bill was duly met on maturity. Pass journal entries in the book of Ramesh, Kannan and Jayan.
Answer:
Book of Ramesh [Drawer] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 8
Book of Kannan [Drawee] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 9
Book of Jayan [Endorser] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 10

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Question 2.
On 10th March 2004, Chandran drew and Devan accepted a 2 months bill for Rs. 2000. On April 11 Chandran sends the bill to his bank for collection. On due date the amount is collected. Give journal entries in the book of both the parties.
Answer:
Journal (In the book of Chandran)
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 11
Journal (In the book of Devan)
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 12
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 13

Question 3.
On 1st June 2005, ‘A’ Sold goods to ‘B’ worth Rs.
20,000 and drew on him a bill for 3 months. ‘B’ accepted the same and returned to ‘A’. On 5th June 2005, ‘A’ discounted the bill with his banker and received Rs. 19,000. On the due date, ‘B’ failed to pay the amount and the bill got dishonoured. Pass journal entries in the books of A and B.
Answer:
Book of A [Drawer] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 14
Book of B [Drawee] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 15

Question 4.
Identify the document shown below and state Any 6 features of the document.
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 16
Answer:
Document is a Bill of Exchange.
Features:

  1. It contains an order to pay money.
  2. The order shortly be unconditional
  3. The drawer must sign the bill
  4. The drawee must be a certain person.
  5. The order must be for the payment of money only.
  6. It should be properly stamped.

Question 5.
From the given specimen of Bill of exchange, identify:

  1. Drawer
  2. Drawee
  3. Payee
  4. Term of bill
  5. Date of maturity
  6. Consideration on the bill

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 17
Answer:
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 18

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Question 6.
Complete the following table.
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 19
Answer:

  1. Debtor
  2. Order or promise, order to make payment
  3. Needs acceptance by drawee/does not need any acceptance.
  4. Three – Drawer, Drawee, Payee Two – Drawer and payee
  5. Drawer has secondary liability.

Question 7.
Complete the journal on the basis of the narration given for a bill of exchange of Rs. 20,000/-
Book of Santhosh Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 20
Answer:
Journal Book of Santhosh
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 21

Plus One Accountancy Bill of Exchange Five Mark Questions and Answers

Question 1.
Ajay sold goods to Babu for Rs. 2,700 on 1.1.2007 and immediately drawn a bill for 4 months upon Babu for the same amount Babu accepted the bill and returned it to Ajay. On the 4th February 2007, Babu retires his acceptance under a rebate of 12% p.a. Give journal entries in the books of both the parties.
Answer:
Book of Ajay [Drawer] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 22
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 23
Book of Babu [Drawee] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 24

Question 2.
In a classroom debate Mohan argued that a bill of exchange and promissory note are same but syam disagree with him and states that they are different, whose argument is correct? Give reason.
Answer:
The argument of Syam is correct. There are some defference between bill of exchange and promissory note.
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 25

Question 3.
On January 15th, 2003 ‘N’ draw a bill of Rs. 8000 on his debtor ‘M’ for two months. By the due date of the bill, ‘M’ became insolvent and a dividend of 50 paise in the rupee was received from his estate. Pass Journal entries in the books of N and M.
Answer:
Journal (In the book of ‘N’)
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 26
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 27

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange

Question 4.
Identify the types of endorsement from the given format and write short notes on each type.
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 28
Answer:

  1. Blank Endorsement: The endorser simply puts his signature, without mentioning the name of the endorsee.
  2. Special Endorsement: The endorser mentions the name of the endorsee along with his signature on the back of the Instrument.
  3. Restrictive Endorsement: Restrictlnq further endorsement.
  4. Sans – Recourse Endorsement: If the bill is dishonoured the holder cannot have recourse to the endorser.
  5. Facultative Endorsement: Endorsement made by waiving some right of the endorser.

Question 5.
The transaction between Rajesh and Murali are journalised below. Identify the drawer, drawee/acceptor, amount and term of bill. Also write appropriate narration to each transaction.
Book of Murali Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 29
Answer:

  1. Drawer – Rajesh
  2. Drawee – Murali
  3. Amount of bill – 10,000/-
  4. Term of bill – 3 Months
  5. Narration:
    • Purchased goods on credit
    • Acceptance given on bill
    • Bill amount paid on the due date

Plus One Accountancy Bill of Exchange Six Mark Questions and Answers

Question 1.
On 5th January 2003, Balu sold goods to Raju for Rs. 2500. Balu drew a 2 months bill on Raju. Raju accepted the bill and returned it to Balu. On 5th March Raju approached Balu with a request to renew the bill for a further period of 2 months. Balu agreed on the proposal for which an interest of Rs. 50 is charged. The second bill is duly accepted and was met on maturity. Give Journal entries in the book of Balu & Raju.
Answer:
Journal (In the book of Balu)
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 30
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 31

Question 2.
On January 15, 2012, ‘Syam’ sold goods to’ Naveen’ for Rs.30,000 and drew a bill for the same amount payable after 3 months. The bill was accepted by Naveen. The bill was discounted by Syam from his bank for Rs. 29,500 on January 31,2012. On maturity, the bill was dishonoured. He further agreed to pay Rs. 10,500 in cash including Rs.500 interest and accept a new bill for two months for the remaining Rs.20,000. The new bill was endorsed by Syam in favour of his creditor ‘Kiran’ for settling a debt of Rs.20500. The new bill was duly met by Naveen on maturity.
Record the Journal entries in the book of Syam and Naveen.
Answer:
Journal Entries (in the book of Syam)
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 32

Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange
Journal Entries (in the book of Naveen)
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 33

Plus One Accountancy Bill of Exchange Eight Mark Questions and Answers

Question 1.
Mr. Anil sold goods to Sunil for Rs. 5,000 on credit and drew a bill for 3 months. Sunil accepted the bill and returned it to Anil. On the due date, the bill was dishonoured, noting charge being Rs. 100. Show journal entries in the books of Anil and Sunil, if

  1. The bill was retained by Mr. Anil.
  2. The bill was endorsed to Mr. Hari.
  3. The bill was discounted with the bank for Rs. 4,800.
  4. The bill was sent to the bank for collection.

Answer:
Book of Anil [Drawer] Journal
1. If the bill is retained
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 34

2. If the bill was endorsed to Mr. Hari.
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 35

3. If the bill is discounted with bank.
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 36

4. If the bill sent for collection
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 37

Book of Sunil [Drawee] Journal
Plus One Accountancy Chapter Wise Questions and Answers Chapter 7 Bill of Exchange 38

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Students can Download Chapter 15 Statistics Questions and Answers, Plus One Maths Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.

Kerala Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Plus One Maths Statistics Three Mark Questions and Answers

Question 1.
Find the mean deviation about the median for the following data: (3 score each)

  1. 13, 17, 16, 14, 11, 13, 10, 16, 11, 18, 12, 17.
  2. 36, 72, 46, 42, 60, 45, 53, 46, 51, 49.

Answer:
1. Arrange the data in the ascending order we have;
10, 11, 11, 12, 13, 13, 14, 16, 16, 17, 17, 18
Here n = 12. So median is the average of 6th and 7th observations.
Therefore; Median, M =\(\frac{13+14}{2}\) = 13.5
Plus One Maths Statistics Three Mark Questions and Answers 1
Mean deviation = \(\frac{\sum_{i=1}^{n}\left|x_{i}-M\right|}{n}=\frac{28}{12}\) = 2.33

2. Arrange the data in the ascending order we have; 36, 42, 45, 46, 46, 49, 51, 53, 60, 72
Here n = 10. So median is the average of 5th and 6th observations.
Therefore; Median, M = \(\frac{46+49}{2}\) = 47.5
Plus One Maths Statistics Three Mark Questions and Answers 2
Mean deviation = \(\frac{\sum_{i=1}^{n}\left|x_{i}-M\right|}{n}=\frac{70}{10}\) = 7.

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Question 2.
The mean and standard deviation of marks obtained by 50 students of a class in three subjects, mathematics, Physics, and Chemistry are given below:
Plus One Maths Statistics Three Mark Questions and Answers 3
Which of the three subject shows the highest variability in marks and which shows the lowest?
Answer:
For Mathematics:
\(\bar{x}\) = 42, σ = 12
∴ CV of Mathematics = \(\frac{12}{42}\) × 100 = 28.57%
For Physics:
\(\bar{x}\) = 32, σ = 15
∴ CV of Physics = \(\frac{15}{32}\) × 100 = 46.88%
For Chemistry:
\(\bar{x}\) = 40.9, σ = 20
∴ CV of Chemistry = \(\frac{20}{40.9}\) × 100 = 48.9%
Thus Chemistry with highest CV shows highest variability and Mathematics with lowest CV shows lowest variability.

Plus One Maths Statistics Four Mark Questions and Answers

Question 1.
Find the mean deviation about the mean for the following data: (4 score each)
1.
Plus One Maths Statistics Three Mark Questions and Answers 4
2.
Plus One Maths Statistics Three Mark Questions and Answers 5
Answer:
1.
Plus One Maths Statistics Three Mark Questions and Answers 6
Plus One Maths Statistics Three Mark Questions and Answers 7
Plus One Maths Statistics Three Mark Questions and Answers 8

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

2.
Plus One Maths Statistics Three Mark Questions and Answers 9
Plus One Maths Statistics Three Mark Questions and Answers 10

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Question 2.
Find the mean deviation about the median for the following data: (4 score each)
1.
Plus One Maths Statistics Three Mark Questions and Answers 11
2.
Plus One Maths Statistics Three Mark Questions and Answers 12
Answer:
1.
Plus One Maths Statistics Three Mark Questions and Answers 13
\(\frac{\sum_{i=1}^{n} f_{i}}{2}=\frac{26}{2}\) = 13
The c.f just greater than 13 is 14 and corresponding value of x is 7. Therefore; median, M = 7
Hence; M.D about median
Plus One Maths Statistics Three Mark Questions and Answers 14

2.
Plus One Maths Statistics Three Mark Questions and Answers 15
\(\frac{\sum_{i=1}^{n} f_{i}}{2}=\frac{29}{2}\) = 14.5
The c.f just greater than 14.5 is 21 and corresponding value of x is 30. Therefore; median, M = 30
Hence; M.D about median
Plus One Maths Statistics Three Mark Questions and Answers 16

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Question 3.
Find the mean deviation about the mean for the following data: (4 score each)
1.
Plus One Maths Statistics Three Mark Questions and Answers 17
2.
Plus One Maths Statistics Three Mark Questions and Answers 18
Answer:
1.
Plus One Maths Statistics Three Mark Questions and Answers 19
Plus One Maths Statistics Three Mark Questions and Answers 20

2.
Plus One Maths Statistics Three Mark Questions and Answers 47
Plus One Maths Statistics Three Mark Questions and Answers 21

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Question 4.
Find the mean deviation about the median for the following data: (4 score each)
1.
Plus One Maths Statistics Three Mark Questions and Answers 22
2.
Plus One Maths Statistics Three Mark Questions and Answers 23
Answer:
1.
Plus One Maths Statistics Three Mark Questions and Answers 24
Median class is the class in which the \(\left(\frac{N}{2}\right)^{th}\) observation lies.
\(\frac{N}{2}=\frac{50}{2}\) = 25
Median class = 20 – 30
M = Median
Plus One Maths Statistics Three Mark Questions and Answers 25
Plus One Maths Statistics Three Mark Questions and Answers 26

2.
Plus One Maths Statistics Three Mark Questions and Answers 27

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics
Median class is the class in which the \(\left(\frac{N}{2}\right)^{th}\) observation lies.
\(\frac{N}{2}=\frac{100}{2}\) = 50
Median class = 35.5 – 40.5
M = Median
Plus One Maths Statistics Three Mark Questions and Answers 28
Plus One Maths Statistics Three Mark Questions and Answers 29

Question 5.
Find the variance and standard deviation of 3, 4, 6, 5, 5, 3, 8, 1, 7, 5
Answer:
Plus One Maths Statistics Three Mark Questions and Answers 30
Plus One Maths Statistics Three Mark Questions and Answers 31
Plus One Maths Statistics Three Mark Questions and Answers 32
\(\frac{259}{10}\) – (4.7)2 = 25.9 – 22.09 = 3.8
Standard Deviation (σ) = \(\sqrt{\text {Variance}}\) = \(\sqrt{3.8}\) =1.95.

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Question 6.
Find the variance and standard deviation of
Plus One Maths Statistics Three Mark Questions and Answers 33
Answer:
Plus One Maths Statistics Three Mark Questions and Answers 34
Plus One Maths Statistics Three Mark Questions and Answers 35
Standard Deviation (σ) = \(\sqrt{\text {Variance}}\)
= \(\sqrt{15.08}\) = 3.88.

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Question 7.
An analysis of monthly wages paid to workers in two firms A and B, belonging to the same industry, gives the following result.
Plus One Maths Statistics Three Mark Questions and Answers 36

  1. Which firm A or B pays larger amount as monthly wages?
  2. Which firm A or B, shows greater variability in individual wages?

Answer:
1. Firm: A
Number of wages earners (n1) = 586
Number of wages earners (\(\bar{x}_{1}\)) = 5253
Total monthly wages = 5253 × 586 = 3078258
Firm: B
Number of wages earners (n1) = 648
Number of wages earners (\(\bar{x}_{1}\)) = 5253
Total monthly wages = 5253 × 648 = 3403944

2. Since both the firms have same mean of monthly wages, so the firm with greater variance will have more variability in individual wages. Thus firm B will have more variability in individual wages.

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics

Question 8.
The sum and sum of squares corresponding to length x (in cm) and weight y (in gm) of 50 plant products are given below:
Plus One Maths Statistics Three Mark Questions and Answers 37
which is more varying, the length or weight?
Answer:
Here,
Plus One Maths Statistics Three Mark Questions and Answers 38
Now
Plus One Maths Statistics Three Mark Questions and Answers 39
C.V of weight = \(\frac{1.38}{5.22}\) × 100 = 26.44
C.V of weight > C.V of length
Thus weight have more variability than length

Plus One Maths Statistics Six Mark Questions and Answers

Question 1.
Find the variance and standard deviation of
Plus One Maths Statistics Three Mark Questions and Answers 40
Answer:
Plus One Maths Statistics Three Mark Questions and Answers 41

Plus One Maths Chapter Wise Questions and Answers Chapter 15 Statistics
Plus One Maths Statistics Three Mark Questions and Answers 42
Standard Deviation (a) = \(\sqrt{\text {Variance}}\)
= \(\sqrt{223.22}\) = 14.94.

Plus One Maths Statistics Practice Problems Questions and Answers

Question 1.
Find the mean deviation about the mean for the following data: (2 score each)

  1. 4, 7, 8, 9, 10, 12, 13, 17.
  2. 38, 70, 48, 40, 42, 55, 63, 46, 54, 44.

Answer:
1.
Plus One Maths Statistics Three Mark Questions and Answers 43
Plus One Maths Statistics Three Mark Questions and Answers 44

2.
Plus One Maths Statistics Three Mark Questions and Answers 45
Plus One Maths Statistics Three Mark Questions and Answers 46

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Students can Download Chapter 9 String Handling and I/O Functions Questions and Answers, Plus One Computer Science Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.

Kerala Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Plus One String Handling and I/O Functions One Mark Questions and Answers

Question 1.
To read a single character for gender i.e. ‘m’ or ‘f’ ________ function is used.
Answer:
(a) getch()
(b) getchar()
(c) gets()
(d) getline()
Answer:
(b) getchar()

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 2.
To use getchar(), putchar(), gets() and puts(), which header file is used?
(a) iostream
(b) cstdio
(c) input
(d) output
Answer:
(b) cstdio

Question 3.
To use cin and cout, which header file is needed?
(a) iostream
(b) cstdio
(c) input
(d) output
Answer:
(a) iostream

Question 4.
Predict the output of the following code snippet.
#include<cstdio>
int mainO
{
char name[ ] = “ADELINE”;
for(int i=0; name[i]!=’\0′;i++)
putchar(name[i]);
}
Answer:
The output is “ADELINE”.

Question 5.
From the following which is equivalent to the function getc(stdin).
(a) putchar()
(b) gets()
(c) getchar()
(d) puts()
Answer:
(c) getchar()

Question 6.
From the following which is equivalent to the function putc(ch, stdout).
(a) putchar(ch)
(b) ch = gets()
(c) ch = getchar()
(d) puts(ch )
Answer:
(a) putchar(ch)

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 7.
To print a single character at a time which function is used?
(a) puts()
(b) putchar()
(c) gets()
(d) getchar()
Answer:
(b) putchar()

Question 8.
To read a string _______ function is used.
(a) puts()
(b) putchar()
(c) gets()
(d) getchar()
Answer:
(b) gets()

Question 9.
To print a string _______ function is used.
(a) puts()
(b) putchar()
(c) gets()
(d) getchar()
Answer:
(b) puts()

Question 10.
Consider the following code snippet.
main()
{
char str[80];
gets(str);
for(int i=0. len=0;str[il!=’\0′;i++.len++);
cout<<“The length of the string is ” <<len;
}
Select the equivalent forthe under lined statement from the following
(a) int len = strlen(str)
(b) int len = strcmp(str)
(c) int len = strcount(str)
(d) None of these
Answer:
(a) int len = strlen(str)

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 11.
Arjun wants to read a string with spaces from the following which is suitable.
(а) cin>>
(b) cin.getline(str,80)
(c) str = getc(stdin)
(d) none of these
Answer:
(b) cin.getline(str,80)

Question 12.
State whether the following statement is true or false. The ‘<<‘ insertion operator stops reading a string when it encounters a space.
Answer:
True

Question 13.
_________ function is used to copy a string to another variable. (SAY-2016) (1)
Answer:
strcpy();

Question 14.

  1. Write the declaration statement for a variable ‘name’ in C++ to store a string of maximum length 30.
  2. Differentiate between the statement cin>>name and gets (name) for reading data to the variable ‘name’. (SAY-2016)

Answer:
1. char name[31];(One for null(\0) character).

OR

cin>> does not allows space. It will take characters up to the space and characters after space will be truncated . Here space is the delimiter. Consider the following code snippet that will take the input upto the space.
#include<iostream>
using namespace std;
int main()
{
char name[20];
cout<<“Enter your name:”;
cin>>name;
cout<<“Hello “<<name;
}
If you input a name “Alvis Emerin” then the output will be Hello Alvis. The string after space is truncated.

2. gets(): This function is used to get a string from the keyboard including spaces. Considerthe following code snippet that will take the input including the space.
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
char name[20];
cout<<“Enter your name:”;
gets(name);
cout<<“Hello “<<name;
}
If you input a name “Alvis Emerin” then the output will be Hello Alvis Emerin.

Question 15.
What is the advantage of using gets() function in the C++ program to input string data? Explain with an example.
Answer:
gets() function is used to get a string from the keyboard including spaces. Consider the following code snippet that will take the input including the space.
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
char name[20];
cout<<“Enter your name:”;
gets(name);
cout<<“Hello “<<name;
}
If you input a name “Alvis” then the output is Hello Alvis.

Plus One String Handling and I/O Functions Two Mark Questions and Answers

Question 1.
In a C++ program, you forgot to include the header file iostream. What are the possible errors occur in that Program? Explain?
Answer:
Prototype error. To use cin and cout the header file iostream is a must.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 2.
Categorise the following into three according to their relationship
iostream, cstdio, gets(), puts(), getchar(), putchar(), getline(), write(), cin, cout.
Answer:
Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and IO Functions 1

Question 3.
Pick the odd one out from the following and give reason.
gets(), getline(), getch() getchar().
Answer:
getline() – It is a stream function whereas the others are console functions.

Question 4.
My_name is a variable contains a string. Write two different C++ statements to display the string. (SAY-2016) (2)
Answer:

  1. cout<<my_name;
  2. puts(my_name);

Question 5.
Suggest most suitable built-in function in C++ to perform the following tasks: (MARCH-2016) (2)

  1. To find the answer for 53
  2. To find the number of characters in the string “KERALA” “HAPPY NEW YEAR”
  3. To get back the number 10 if the argument is 100.

Answer:

  1. pow(5,3);
  2. strlen(“KERALA”)
  3. tolower(‘M’)
  4. sqrt(100);

Question 6.
Read the following C++ statements:
charstr[50];
cin>>str;
cout<<str;
During execution, if the string given as input is “GREEN COMPUTING”, the output will be only the word “GREEN”. Give reason for this. What modification is required to get the original string as output? (SCERT SAMPLE -1) (2)
Answer:
cin>>word;
cout<<word;
It displays “HAPPY” because cin takes characters upto the space. That is space is the delimiter for cin. The string after space is truncated. To resolve this use gets() function.

Because gets() function reads character upto the enter key.
Hence gets(word);
puts(word);
Displays “HAPPY NEW YEAR”

Question 7.
Suppose M[5][5] is a 2D array that contains the elements of a square matrix. Write C++ statements to find the sum of the diagonal elements. (2)
Answer:
gets() function is used to get a string from the keyboard including spaces. To use gets () function the header file cstdio must be included. It reads the characters upto the enter key pressed by the user.
eg:
char name[20];
cout << “Enter your name”;
gets(name);
cout<< “Hello”<< name;
When the user gives Alvis Emerin. It displays as “Hello Alvis Emerin”.

Plus One String Handling and I/O Functions Three Mark Questions and Answers

Question 1.
Suresh wants to print his name and native place using a C++ program. The program should accept name and native place first.
Name is: Suresh Kumar
Address is: Alappuzha
Answer:
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
char name[20],place[20];
cout<<“Enter your name”;
cin.getline(name,80);
cout<<“Enter your place”;
cin.getline(place,80);
cout<<“Your name is puts(name);
cout<<“Your place is puts(place);
}

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 2.
“Programming is Fun”. Write a C++ program to read a string like this in lower case and print it in UPPER CASE. With out using toupper() library function.
Answer:
using namespace std;
#include<cstdio>
int main()
{
char line[80];
int i;
puts(Enter the string to convert”);
gets(line);
for(i=0;line[i]!=’\0′;i++)
if (Iine[i]>=97 && line[i]<=122)
line[i]=line[i] – 32;
puts(line);
}

Question 3.
An assignment Kumar has written a C++ program which reads a line of text and print the number of vowels in it. What will be his program code?
Answer:
#include<cstdio>
#include<cctype>
#include<iostream>
using namespace std;
int main()
{
char line[80];
int i,vowel=0;
puts(Enter a string”);
gets(line);
for(i=0;line[i]!=’\0′;i++)
switch(tolower(line[i]))
{
case ‘a’:
case ‘e’:
case ‘i’:
case ‘o’:
case ‘u’:
vowel++;
}
cout<<“The number of vowels is “<<vowel;

Question 4.
What will be the output of the following code if the user enter the value “GOOD MORNING”.
1. char string [80];
gets(string);
cout<<string;

2. char string [80];
cin>>string;
cout<<string;

3. charch;
ch = getchar();
cout<<ch;

4. char string [80];
cin.getline(string,9);
cout<<string;
Answer:

  1. GOOD MORNING
  2. GOOD
  3. G
  4. GOOD MORN

Question 5.
Consider the following code snippet.
int main()
{
int n;
cout<<“Enter a number”;
cin>>n;
cout<<“The number is “<<n;
}
Write down the names of the header files that must be included in this program
Answer:
Here cin and cout are used so the header file iostream must be included.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 6.
Write a program to display the following output.
A
BB
CCC
#include<iostream>
using namespace std;
int main()
{
char str[]=”ABC”;
int i,j;
for(i=0;i<3;i++)
{
for(j=0;j<=i;j++)
cout<<str[i];
cout<<endl;
}
}

Question 7.
Distinguish getchar and gets.
Answer:
getchar is a character function but gets is a string function. The header file cstdio.h must be included. It reads a character from the keyboard.
Eg.
char ch;
ch = getchar();
cout<<ch;
gets is used to read a string from the keyboard. It reads the characters upto enter key. The header file cstdio must be included.
char str[80J;
cout<<“Enter a string”;
gets(str);

Question 8.
Distinguish putch and puts.
Answer:
putch is a character function but puts is a string function. The header file cstdio must be included. It prints a character to the monitor.
Eg:
char ch;
ch = getc(stdin);
putch(ch);
puts is used to print a string. The header file stdio.h must be included.
charstr[80];
puts(“Entera string”);
gets(str);
puts(str);

Question 9.
Write a program to check whether a string is palindrome or not. (A string is said to be palindrome if it is the same as the string constituted by reversing the characters of the original string. eg: “MALAYALAM”, “MADAM”, “ARORA”, “DAD”, etc.)
Answer:
#include<iostream>
using namespace std;
int main()
{
char str[40];
int len,i,j;
cout<<“Enter a string:”;
cin>>str;
for(len=0;str[len]!-\0′;len++);
for(i=0,j=len-1;i<len/2;i++,j–)
if(str[i]!=str[j])
break;
if(i==len/2) .
cout<<str<<” is palindrome”;
else
cout<<str<<” is not palindrome”;
}

Question 10.
Explain multi-character function.
Answer:
getline() and write() functions are multi character functions:
1. getline() It reads a line of text that ends with a newline character. It reads white spaces also.
eg:
char line[80];
cin.getline(line,80);

2. write() It is used to display a string.
Eg.
char line[80];
cin.getline(line,80);
cout.write(line,80);

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 11.
Read a string and print the number of vowels.
Answer:
#include<cstdio>
#include<cctype>
#include<iostream>
using namespace std;
int main()
{
char line[80];
int i,vowel=0;
puts(“Enter a string”);
gets(line);
for(i=0;line[i]!=’\0′;i++)
switch(tolower(line[i]))
{
case ‘a’:
case ‘e’:
case ‘i’;
case ‘o’:
case ‘u’:
vowel++;
}
cout<<“The number of vowels is in the string is “<< vowel;
}

Question 12.
Distinguish between get() and put() functions.
Answer:
get() function:
get() is an input function. It is used to read a single character and it does not ignore the white spaces and newline character.
Syntax is cin.get(variable);
eg: char ch;
cin.get(ch);

put() function:
put() is an output function. It is used to print a character.
Syntax is cout.put(variable);
eg:
charch;
cin.get(ch);
cout.put(ch);

Question 13.
Write a program to read a string and print the number of consonants.
Answer:
#include<iostream>
#include<cstdio>
#include<cctype>
using namespace std;
int main()
{
char str[40],ch;
int consonent = 0,i;
cout<<“Enter a string:”;
gets(str);
for(i=0;str[i]!=’\0′;i++)
{
ch = toupper(str[i]);
if(ch>=’B’ && ch<=’Z’)
if(ch!=’E’&& ch!=’I’&& ch!=’0’&& ch!=’U’)
consonent++;
}
cout<<“The number of consonents is “<<consonent;
}

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 14.
Write a program to read a string and print the number of spaces.
Answer:
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
char str[40];
int space=0,i;
cout<<“Enter a string:”;
gets(str);
for(i=0;str[i]!=’\0′;i++)
if(str[i]==32)
space++;
cout<<“The number of spaces is “<<space;
}

Question 15.
Describe in detail about the unformatted console I/O functions.
Answer:
1. Single character functions: This function is used to read or print a character at a time,
(i) getchar():
It reads a character from the keyboard and store it in a character variable.
eg:
char ch;
ch=getchar();

(ii) putchar():
This function is used to print a character on the screen.
eg:
char ch;
ch = getchar();
putchar(ch);

2. String functions This function is used to read or print a string.
(i) gets():
This function is used to read a string from the keyboard and store it in a character variable.
eg:
charstr[80];
gets(str);

(ii) puts():
This function is used to display a string on the screen.
eg:
char str[80];
gets(str);
puts(str);

Question 16.
Write a program to input a string and find the number of uppercase letters, lowercase letters, digits, special characters and white spaces.
Answer:
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
char str[100];
int i,digit=0, Ualpha=0, Lalpha=0, special=0, wspace=0;
cout<<“Enter a string:”;
gets(str);
for(i=0;str[i]!=’\0′;i++)
if(str[i]>=48 && str[i]<=57)
digit++;
else if(str[i]>=65 && str[i]<=90)
Ualpha++;
else if(str[i]>=97 && str[i]<=122)
Lalpha++;
else if(str[i]==’ ‘ || str[i]==’\t’)
wspace++;
else
special++;
cout<<“The number of alphabets is “<<Ualpha+Lalpha<<
” the number of Uppercase letters is “<<Ualpha<< ” the number of Lowercase letters is “<<Lalpha<<” the number of digits is “<<digit<<” the special characters is “<<special<<” and the number of white spaces is “<<wspace;
}

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 17.
Write a program to count the number of words in a sentence.
Answer:
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
int i,words=1;
char str[80];
cout<<“Enter a string\n”;
gets(str);
for(i=0;str[i]!=’\0′;i++)
if(str[i]==32)
words++;
cout<<“The number of words is “<<words;
}

Question 18.
Write a program to input a string and replace all lowercase vowels by the corresponding uppercase letters.
Answer:
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
char str[100];
int i;
cout<<“Enter a string:”;
gets(str);
for(i=0;str[i]!=\0′;i++)
if(str[i]>=65 && str[i]<=90 || str[i]> = 97 && str[i]<=122)
switch(str[i])
{
case ‘a’:
str[i] = str[i]-32;
break;
case ‘e’:
str[i] = str[i]-32;
break;
case ‘i’:
str[i] = str[i]-32;
break;
case ‘o’: .
str[i] = str[i]-32;
break;
case ‘u’:
str[i] = str[i]-32;
}
cout<<str;
}

Question 19.
Write a program to input a string and display its reversed string using console I/O functions only. For example if the input is “AND” the output should “DNA”.
Answer:
#include<iostream>
using namespace std;
int main()
{
char str[40],rev[40];
int len.ij;
cout<<“Enter a string:”;
cin>>str;
for(len=0;str[len]!=’\0′;len++);
for(i=0,j=len-1 ;i<len;i++,j–)
rev[il=str[j];
rev[i]=’\0′;
cout<<“The reversed string is “<<rev;
}

Plus One Computer Science Chapter Wise Questions and Answers Chapter 9 String Handling and I/O Functions

Question 20.
Write a program to input a word(say COMPUTER) and create a triangle as follows.
C
C O
C O M
C O M P
C O M P U
C O M P U T
C O M P U T E
C O M P U T E R
Answer:
#include<iostream>
#include<cstring>//for strlen()
using namespace std;
int main()
{
charstr[20];
cout<<“enter a word(eg.COMPUTER):”;
cin>>str;
int ij;
for(i=0;i<strlen(str);i++)
{
for(j=0;j<=i;j++)
cout<<str[j]<<“\t”;
cout<<endl;
}
}

Question 21.
Write a program to input a line of text and display the first characters of each word. Use only console I/O functions. For example, if the input is “Save Water, save Nature”, the output should be “SWSN”.
Answer:
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
int i;
charstr[80];
cout<<“Enter a string\n”;
gets(str);
if(str[0]!=32)
cout<<str[0];
for(i=0;str[i]!=’\0′;i++)
if(str[i]==32 && str[i+1]!=32)
cout<<str[i+1];
}

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Students can Download Chapter 12 Internet and Mobile Computing Questions and Answers, Plus One Computer Science Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.

Kerala Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Plus One Internet and Mobile Computing One Mark Questions and Answers

Question 1.
A network of smaller networks that exists all over the world is called ____________
Answer:
Internet

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 2.
ARPANET means ______
Answer:
Advanced Research Projects Agency Network

Question 3.
Odd one out.
(a) Internet explorer
(b) Mozilla
(c) Netscape navigator
(d) Windows Explorer
Answer:
(d) Windows explorer, the others are browsers.

Question 4.
Odd man out.
(a) Word
(b) Excel
(c) PowerPoint
(d) Mosaic
Answer:
(d) Mosaic. It is a browser, others are MS Office packages.

Question 5.
The interface between user and computer hardware is called operating system then what about the interface between user and internet (www)?
Answer:
Browser

Question 6.
With the help of this the user can search informations provided on the internet. What is it?
Answer:
Browser.

Question 7.
Benhur wants to navigate through the web pages from the following which will help him?
(a) A browser
(b) MS Word
(c) Tally
(d) Paint
Answer:
(a) A browser

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 8.
I am a piece of software. With the help of me a user can search information from the internet and navigate through the web pages. Who am I?
Answer:
Browser

Question 9.
Anil told you that he was browsing at that time. From the following choose the right one.
(a) He was visiting a website
(b) He was reading a book
(c) He was watching TV
(d) He was sleeping
Answer:
(a) He was visiting a website. The process of visiting a website is called browsing.

Question 10.
___________ is a popular browser commonly used in windows operating system.
(a) Mozilla
(b) Netscape navigator
(c) Mosaic
(d) Internet explorer
Answer:
(d) Internet Explorer

Question 11.
___________ browser is commonly used in Linux.
(a) Internet explorer
(b) Mozilla
(c) Netscape navigator
(d) Mosaic
Answer:
(b) Mozilla

Question 12.
Mr. Asokan wants to go the previous page. From the following which option will help him?
(a) Back button
(b) Refresh
(c) Favorites
(d) Stop
Answer:
(a) Back and forward button

Question 13.
While navigating through a website, sita wants to go back to the home page. From the following which will help her?
(a) Refresh
(b) Search
(c) Home
(d) Mail
Answer:
(c) Home

Question 14.
While surfing a website, Joyson wants to play music or video. Which button will help him?
(a) Home
(b) Search
(c) Media
(d) Mail
Answer:
(c) Media

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 15.
Purnima wants to know the websites that her brother had visited last week? From the following which will help her?
(a) Media
(b) History
(c) Mail
(d) Search
Answer:
(b) History

Question 16.
While browsing, the internet connection is lost so you want to reload the web page. Which will help for this?
(a) Refresh
(b) Stop
(c) Media
(d) Edit
Answer:
(a) Refresh

Question 17.
The address bar is also known as _________
(a) URL
(b) UDL
(c) KRL
(d) None of these
Answer:
(a) URL

Question 18.
You want to add and organize a website to a list. Which will help for this?
(a) Favorites
(b) Search
(c) Back
(d) Mail
Answer:
(a) Favorites

Question 19.
How can it possible to understand that the browser is retrieving data?
(a) Access indicator icon animates
(b) From the refresh button
(c) From the back button
(d) None of these
Answer:
(a) Access indicator icon animates

Question 20.
The progress of the data being downloaded indicates by the ____________
(a) Address bar
(b) Progression bar
(c) Status bar
(d) None of these
Answer:
(c) Status Bar

Question 21.
Baby wants to download a file The time needed for that depends on the _________ of the file.
(a) Size
(b) Place
(c) Type
(d) None of these
Answer:
(a) Size

Question 22.
Kasim wants to print data on a A4 size paper. From the following which option will help him for that?
(a) Copy
(b) Page setup
(c) Search
(d) Media
Answer:
(b) Page setup

Question 23.
Mr. Franco’s e-mail id is franco@rediffmail.com. He wants to connect this page fastly. From the following which will help him.
(a) Favorite
(b) Search
(c) Refresh
(d) Media
Answer:
(a) Favorite

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 24.
Mrs. Janaki purchased a product through online and payment was given by credit card. She wants to protect the information about the credit card. How can it be possible from the following?
(а) Security
(b) Favorite
(c) Media
(d) Content
Answer:
(a) Security

Question 25.
Odd man out.
(a) www.google.com
(b) www.yahoo.com
(c) www.altavista.com
(d) www.stmaryshss.com
Answer:
(d) www.stmaryshss.com, the others are search engines.

Question 26.
Alvis got email about some products without his consent. Which type of email is this?
Answer:
Spam

Question 27.
What is the primary thing you have needed to sent an email to your friend?
Answer:
You have need an email id (address)

Question 28.
There is a PTA meeting in your school in the next month. The school authorities want to send the invitation to the parents. Which field of the message structure will help for this?
Answer:
CC or bcc

Question 29.
You want to send an invitation to your friends But the friends should not know that the same invitation is sent by you to others also. Which field of the message structure will help you?
Answer:
bcc

Question 30.
Mr. Lijo wants to send his photograph to his friend by email. Which feature will help him for this?
Answer:
Attachment feature

Question 31.
You got some pictures of Jesus Christ through email from one of your friends. You want to send this pictures to your brother. What button will help you for this?
Answer:
Forward button

Question 32.
You got an email from your father working abroad. You want to send an email without typing his email id. Which button will help you for this?
Answer:
Reply button

Question 33.
You got an email from an Insurance Company you want to store their email id which feature will help you for this?
Answer:
We can add address to Address Book.

Question 34.
Who proposed the idea of www.
Answer:
Tim Berners Lee

Question 35.
The protocol for internet communication is ___________
Answer:
TCP/IP protocol

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 36.
A short distance wireless Internet access method is ___________.
Answer:
Wi-Fi

Question 37.
Give an example for an e-mail address.
Answer:
jobi_cg@rediffmail.com

Question 38.
Which of the following is not a search engine?
(а) Google
(b) Bing
(c) Face book
(d) Ask
Answer:
(c) Facebook

Question 39.
Name the protocol used for e-mail transmission across Internet.
Answer:
Simple Mail Transfer Protocol(SMTP)

Question 40.
Name three services over Internet.
Answer:
WWW, Search engine, Engine

Question 41.
Each document on the web is referred using ___________
Answer:
Uniform Resource Locator(URL)

Question 42.
The small text files used by browsers to remember our email id’s, user names, etc are known as ____________.
Answer:
Cookies

Question 43.
The act of breaking into secure networks to destroy data is called ___________ hacking.
Answer:
Black hats

Question 44.
SIM is _______
(a) Subscriber Identity Module
(b) Subscriber Identity Mobile
(c) Subscription Identity Module
(d) Subscription Identity Mobile
Answer:
(a) Subscriber Identity Module

Question 45.
The protocol used to send SMS message is _________
Answer:
SS7(Signalling System No.7)

Question 46.

  1. Define Intranet
  2. Write the structure of an e-mail address. (1)

Answer:

  1. Intranet: A private network inside a company or organisation is called intranet,
  2. The structure of the email address is given below username@domainname
    eg: jobi_cg@rediffmail.com

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 47.

  1. Acquiring information such as username, password, credit card details etc. using misleading websites is known as _______
  2. Pick the odd one out:
    Google, Safari, Mozilla Firefox, Internet explorer.

Answer:

  1. Phishing
  2. Google it is a search engine All others are web browsers

Question 48.
Bluetooth can be used for _________ communication
(i) long distance
(ii) short distance
(iii) mobile phone
(iv) all of these
Answer:
(ii) short distance/(iii) mobile phone

Question 49.
Pick the odd one from the following list
(a) Spam
(b) Trojan horse
(c) Phishing
(d) Firewall
Answer:
(d) Firewall

Question 50.
_________ are small text files that are created in our computer when we use a browser to visit a website.
Answer:
cookies

Question 51.
Which one of the following technologies is used for locating geographic positions according to satellite based navigation system?
(a) MMS
(b) GPS
(c) GSM
(d) SMS
Answer:
(b) GPS

Plus One Internet and Mobile Computing Two Mark Questions and Answers

Question 1.
While walking on the road, Simran saw a notice board contains a text “Browsing” in front of a shop. What is Browsing?

OR

Roopa’s mother told you that Roopa is browsing in her room. What is browsing?
Answer:
The process of visiting the websites of various companies, organization, government, individuals etc is called internet browsing or surfing with the help of a browser software we can browse websites.

Question 2.
How can we know that the browser is working or not?
Answer:
The access indicator icon on the right corner of menu bar animates (rotates), when the browser is retrieving data or working. It is static when the browser is not working.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 3.
Discuss the steps to download a file from the website.
Answer:
To download a file from the website click on the link or button provided in the web page, then a dialog box will display. Enter the file name and specify the folder to which the file is to be saved. Then click save button then a window showing the progress of the downloading.

Question 4.
What is a Spamming?
Answer:
Sending an email without recipient’s consent to promote a product or service is called spamming. Such an email is called a spam.

Question 5.
You want to send a picture drawn using MS paint immediately to your friend. What method will you adopt for this, so that your friend receives it within seconds? Explain the steps to perform this operation.
Answer:
E-mail (Electronic mail) can be used. There is a facility called attachment will help you to send files with E-mail to your friend. First open your mail box, then take the option to write mail. Fill the email id and subject in the text boxes namely To and Sub respectively.

You can type text in the area given below. Then press the option attachments then select the picture file then press done and press send button.

Question 6.
What do you mean by an ‘always on’ connection?
Answer:
Wired broadband connection is called ‘always on’ connection because it does not need to dial and connect.

Question 7.
What are wikis?
Answer:
In this we can give our contributions regarding various topics and others can watch and edit the content. So incorrect information, advt, etc. are removed quickly.
eg: www.wikipedia.org.

Question 8.
How does a Trojan horse affect a computer?
Answer:
It appears as a useful software but it is a harmful software and it will delete useful software or files in a computer.

Question 9.
How can multimedia content be sent using mobile phones.
Answer:
MMS (Multi-Media Service) allows sending Multi-Media(text, picture, audio and video file) content using mobile phones. It is an extension of SMS.

Question 10.
What are the functions of a mobile OS?
Answer:
Mobile OS manages the hardware, multimedia functions, Internet connectivity, etc. Popular OSs are Android from Google, iOS from Apple, BlackBerry OS from BlackBerry and Windows Phone from Microsoft.

Question 11.
1. Observe the two figures given
Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing 1

  • Write their names
  • What are their uses?
  • Name the device associated with them.

2. RAM cannot be replaced by hard disk in a computer. Why?
Answer:
1. Their names are

  • Bar code, QR code
  • This is used to store all the information about a product such as name, price, batch, Exp. date etc.
  • Barcode Reader, Mobile camera (Mobile camera can be used to read QR code information).

2. RAM means Random Access Memory. It is also called read and write memory. It is used to store operating system, and other programs, The one and only memory that the processor can be accessed is the primary memory. Hence RAM cannot be replaced by hard disk in a computer.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 12.
Explain “DOS attack’’ on servers.
Answer:
Denial of Service(DoS) attack:
Its main target is a Web server. Due to this attack the Web server/computer forced to restart and this results refusal of service to the genuine users.

If we want to access a website first you have to type the web site address in the URL and press Enter key, the browser requests that page from the web server. Dos attacks send huge number of requests to the web server until it collapses due to the load and stops functioning.

Question 13.
Find the best matches from the given definitions for the terms in the given list.
(Worm, Hacking, Phishing, Spam)

  1. Unsolicited emails sent indiscriminately.
  2. A technical effort to manipulate the normal behavior of networked computer system.
  3. A stand alone malware program usually makes the data traffic slow.
  4. Attempt to acquire information like usernames and passwords by posing as the original website.
  5. Appear to be a useful software but will do damage like deleting necessary files.

Answer:
Worm – 3
Hacking – 2
Phishing – 4
Spam – 1

Plus One Internet and Mobile Computing Three Mark Questions and Answers

Question 1.
What is a browser?
Answer:
A browser is a piece of software that acts as an interface between the user and the internal working of the internet. With the help of a browser the user can search information on the internet and it allows user to navigate through the web pages. The different browsers are

  • Microsoft internet explorer
  • Mozilla
  • Netscape Navigator
  • Mosaic
  • Opera

Question 2.
Mr. Anirudhan wants to visit the website of Manorama. Their website address is www. manoramaonline.com. How can it be possible?
Answer:
To visit the website of manorama. Anirudhan has to type “www.manoramaonline.com” in the address bar and press the enter key or use the go button. Then the home page of manorama will display. Sometimes while typing the website address on the browser automatically searches and display the homepage.

Question 3.
The education Dept, of Govt, of Kerala declared SSLC results and it is available on the internet your friend wants to save the result in his computer. Help him to do so. .
Answer:
To save the result in his computer to a file by using the ‘save’ or ‘save as’ option of the file menu. When click this option a dialog box will appear then specify the folder whereas the file has to be saved using the dialog box and click OK. To save an image right click on the image, a pop-up menu will appear then choose the save option give a name and press OK.

Question 4.
The application form of Kerala entrance exam can be downloaded from the official website of Kerala govt. What do you mean by downloading?
Answer:
Downloading is the transfer of files or data from one computer to another usually from a server com¬puter to a client computer. The time required to download the file depends on the size of the file. The files may be text, graphics, program, movies, music, etc.

To download a file click on the link or button provided in the web page and specify the folder and filename and there is a window that shows the progress of the file being downloaded.

Question 5.
To apply minority scholarship, a student has to enter his details online, take a printout of this web page then send the application form with this printout to the authorities. Explain how to take a printout of a web page ?
Answer:
To print a web page either select the print command from file menu or use the print button on the standard tool bar. The page setup option is provided in the file menu. It helps to specify the paper size, margins header and footer and also the page orientation. The print preview option helps to view how the page will look after printing.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 6.
Mr. Franco’s e-mail id is franco@rediffmail.com. He wants to connect this page fastly and he visited regularly. How can it possible?
Answer:
Mr. Franco regularly visited this site to visit this site he has to type the address repeatedly every time. It is laborious work and it can be avoided if he marks the particular address as favorite. A favorite is a link to a web page. So that he can access that page faster.

To do this click add to favorite option then a dialog box appears that asks for a name for the favorite. To make the web page available offline, then ‘Make available offline1 option has to be checked.

Question 7.
Match the following.

(1) Browser a. File
(2) Menu Bar b. URL
(3) Tool Bar c. Previous page
(4) Address Bar d. Progress
(5) Status Bar e. Mail icon
(6) Back Button f. Mosaic

Answer:
(1) f (2) a (3) e (4) b (5) d (6) c

Question 8.
Noby accessing internet by using a dial-up connection and manu using a direct connection. What is the difference between these two?
Answer:
There are two ways to connect to the internet. First one dialing to an ISP’s computer or with a direct connection to an ISP.
1. Dial-up Connection:
Here the internet connection is established by dialing into an ISP’s computer and they will connect our computer to the internet. It uses Serial Line Internet Protocol (SLIP) or Point to Point Protocol (PPP). It is slower and has a higher error rate.

2. Direct connection:
In direct connection there is a fixed cable or dedicated phone line to the ISP. Here it uses ISDN (Integrated Services Digital Network) a high speed version of a standard phone line. Another method is leased lines that uses fibre optic cables.

Digital Subscribers Line (DSL) is another direct connection, this uses copper wires instead of fibre optic for data transfer. Direct connection provides high speed internet connection and error rate is less.

Question 9.
Explain the different steps happened in between user’s click and the page being displayed.
Answer:

  1. The browser determines the URL selected.
  2. The browser asks the DNS for URLS corresponding IP address (Numeric address)
  3. The DNS returns the address to the browser.
  4. The browser makes a TCP connection using the IP address.
  5. Then it sends a GET request for the required file to the server.
  6. The server collects the file and send it back to the browser.
  7. The TCP connection is released.
  8. The text and the images in the web pages are displayed in the browser.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 10.
What is a Spamming?
Answer:
Sending an email without recipient’s consent to promote a product or service is called spamming. Such an email is called a spam.

Question 11.
You wish to visit the website of your school. Name the software required. Which software is available with Windows for this purpose? Give names of other such software.
Answer:
Browsing software or Browser. The browsers are:

  1. Netscape Navigator
  2. Internet Explorer
  3. Mozilla
  4. Opera
  5. Mosaic etc.

Question 12.
Suppose you want to collect information regarding Tsunami using Internet.

  1. Suggest a method for this purpose
  2. Explain one method adopted.

Answer:
A browser is a piece of software that acts as an interface between the user and the internal working of the internet. With the help of a browser the user can search information on the internet and it allows userto navigate through the web pages. The different browsers are

  • Microsoft internet explorer
  • Mozilla
  • Netscape Navigator
  • Mosaic
  • Opera

Question 13.
What is a blog?
Answer:
Conducting discussions about particular subjects by entries or posts. The posts appeared in the reverse chronological order means the most recent post appears first.
eg: Blogger.com, WordPress.com, hsslive.com etc.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 14.
What do you mean by phishing.
Answer:
it is an attempt to get others information such as usenames, passwords, bank ale details etc by acting as the authorized website. Phishing websites have URLs and home pages similar to their original ones and mislead others, it is called spoofing.

Question 15.
What is quarantine?
Answer:
When you start an anti-virus program and if any fault found it stops the file from running and stores the file in a special area called Quarantine (isolated area) and can be deleted later.

Question 16.
Compare the intranet and extranet.
Answer:
A private network inside a company or organisation is called intranet and can be accessed by the company’s personnel. But Extranet allows vendors and business partners to access the company resources.

Question 17.
Write short notes on

  1. mobile broadband
  2. Wi-MAX

Answer:

  1. Mobile broadband: Accessing Internet using wireless devices like mobile phones, tablet, USB dongles, etc.
  2. Wi MAX(Wireless Microwave Access): It uses microwaves to transmit information across a network in a range 2GHz to 11GHz over very long distance.

Question 18.
Compare blogs and microblogs.
Answer:
Blogs: Conducting discussions about particular subjects by entries or posts. The posts appeared in the reverse chronological order means the most recent post appears first.
eg: Blogger.com, WordPress.com, hsslive.com etc.

Microblogs: It allows users to exchange short messages, multimedia files, etc.
eg: www.twitter.com

Question 19.
What is firewall?
Answer:
It is a system that controls the incoming and outgoing network traffic by analyzing the data and then provides security to the computer network in an organization from other networks (internet).

Question 20.
XYZ engineering college has advertised that its campus is Wi-Fi enabled. What is Wi-Fi? How is the Wi-Fi facility implemented in the campus.
Answer:
Wi-Fi means Wireless Fidelity. It is a wireless technology. Some organisation offers Wi-Fi facility. Here we can connect internet wirelessly over short distance, using Wi-Fi enabled devices.

It uses radio waves to transmit information across a network in a range 2.4 GHz to 5 GHz in short distance. Nowadays this technology is used to access internet in campuses, hypermarkets, hotels by using Laptops, Desktops, tablet, mobile phones etc.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 21.
What is GPS?
Answer:
It is a space based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. The system provides critical capabilities to military, civil and commercial users around the world.

It is maintained by the United States government and is freely accessible to anyone with a GPS receiver. GPS was created and realized by the U.S. Department of Defense (DoD) and was originally run with 24 satellites. It is used for vehicle navigation, aircraft navigation, ship navigation, oil exploration, Fishing, etc. GPS receivers are now integrated with mobile phones.

Question 22.
Write short notes on SMS.
Answer:
Short Message Service(SMS):
It allows transferring short text messages containing up to 160 characters between mobile phones. The sent message reaches a Short Message Service Center(SMSC), that allows ‘store and forward’ systems. It uses the protocol SS7(Signaling System No7). The first SMS message ‘Merry Christmas’ was sent on 03/12/1992 from a PC to a mobile phone on the Vodafone GSM network in UK.

Question 23.
What is smart card? How it is useful?
Answer:
A smart card is a plastic card with a computer chip or memory that stores and transacts data. A smart card (may be like your ATM card) reader used to store and transmit data. The advantages are it is secure, intelligent and convenient. The smart card technology is used in SIM for GSM phones. A SIM card is used as an identification proof.

Question 24
Social media plays an important role in today’s life. Write notes supporting and opposing its impacts.(3)
Answer:

Advantages of social media:

  • Bring people together: It allows people to maintain the friendship.
  • Plan and organize events: It allows users to plan and organize events.
  • Business promotion: It helps the firms to promote their sales.
  • Social skills: There is a key role of the formation of society.

Disadvantages.

  • Intrusion to privacy: Some people may misuse the personal information.
  • Addiction: sometimes it may waste time and money.
  • Spread rumours: The news will spread very quickly and negatively

Question 25.
One of your friends wants to send an email to his father abroad to convey him birthday wishes with a painting done by him. Explain the structure and working of email to him. (3)
Answer:
The email message contains the following fields.

  1. To: Recipient’s address will be enter here. Multiple recipients are also allowed by using coma.
  2. CC: Enter the address of other recipients to get a carbon copy of the message.
  3. bcc: The address to whom blind carbon copies are to be sent. This feature allows people to send copies to third recipient without the knowledge of primary and secondary recipients.
  4. From: Address of the sender
  5. Reply to: The email address to which replies are to be sent.
  6. Subject: Short summary of the message.
  7. Body: Here the actual message is to be typed.

Question 26.
Briefly explain any three mobile communication services.
Answer:
Mobile communication services.
1. Short Message Service(SMS):
It allows transferring short text messages containing up to 160 characters between mobile phones. The sent message reaches a Short Message Service Center(SMSC), that allows ‘store and forward’ systems. It uses the protocol SS7(Signaling System No7), The first SMS message ‘Merry Christmas’ was sent on 03/12/1992 from a PC to a mobile phone on the Vodafone GSM network in UK.

2. Multimedia Messaging Service (MMS):
It allows sending Multi-Media(text, picture, audio and video file) content using mobile phones. It is an extension of SMS.

3. Global Positioning System(GPS):
It is a space – based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. The system provides critical capabilities to military, civil and commercial users around the world.

It is maintained by the United States government and is freely accessible to anyone with a GPS receiver. GPS was created and realized by the U.S. Department of Defense (DoD) and was originally run with 24 satellites. It is used for vehicle navigation, aircraft navigation, ship navigation, oil exploration, Fishing, etc. GPS receivers are now integrated with mobile phones.
Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing 2

4. Smart Cards:
A smart card is a plastic card with a computer chip or memory that stores and transacts data. A smart card (maybe like your ATM card) reader used to store and transmit data. The advantages are it is secure, intelligent and convenient. The smart card technology is used in SIM for GSM phones. A SIM card is used as an identification proof.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 27.
Define Internet. Compare two types of Internet connectivities namely Dial-up and Broadband.
Answer:
Types of connectivity
There are two ways to connect to the internet. First one dialing to an ISP’s computer or with a direct connection to an ISP.

Question 28.
1. your friend does not have an e-mail address. Suggest an e-mail address for him. Starting the advantages of e-mail, explain how it becomes useful for his further communications.

OR

2. List the possible risks while interacting with social media.
Answer:
1. An example of an email id isjobi_cg@rediffmail. com. here jobi_cg is the user name, rediffmail is the portal or website address and.com is the top level domain which identifies the type of organisation. Similarly, we can create an email id, for this type the URL “www.rediffmail.com” and for the new user you have to signup and create an email Id.
The advantages of email are given below:

  1. Speed is high
  2. It is cheap
  3. We can send email to multiple recipients.
  4. Incoming messages can be saved locally.
  5. It reduces the usage of paper.
  6. We can access mail box anytime and from any where.

2. The possible risks while interacting with social media is given below.

  • Intrusion to privacy: Some people may mis use the personal information.
  • Addiction: Sometimes due to addiction it may waste time and money.
  • Spread rumours: The news will spread very quickly and negatively.

Question 29.
Mobile phone technology has evolved through four generations.

  1. Which generation is called Long Terms Evolution?
  2. Explain some major advancements evolved through these generations. (3)

Answer:
1. 4G

2. Generations in mobile communication
The mobile phone was introduced in the year 1946. Early stage it was expensive and limited services hence its growth was very slow. To solve this problem, cellular communication concept was developed in 1960’s at Bell Lab. 1990’s onwards cellular technology became a common standard in our country.

The various generations in mobile communication are:
(a) First Generation networks(1G):
It was developed around 1980, based on analog system and only voice transmission was allowed.

(b) Second Generation networks(2G):
This is the next generation network that was allowed voice and data transmission. Picture message and l\4MS(Multimedia Messaging Service) were introduced. GSM and CDMA standards were introduced by 2G.

(i) Global System for Mobile(GSM):
It is the most successful standard. It uses narrow band TDMA(Time Division Multiple Access), allows simultaneous calls on the same frequency range of 900 MHz to 1800 MHz. The network is identified using the SIM(Subscriber Identity Module).

(a) GPRS(General Packet Radio Services):
It is a packet oriented mobile data service on the 2G on GSM. GPRS was originally standardized by European Telecommunications Standards Institute (ETSI) GPRS usage is typically charged based on volume of data transferred. Usage above the bundle cap is either charged per megabyte or disallowed.

(b) EDGE(Enhanced Data rates for GSM Evolution):
It is three times faster than GPRS. It is used for voice communication as well as an internet connection.

(ii) Code Division Multiple Access(CDMA):
It is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, which is where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies To permit this to be achieved without undue interference between the users, and provide better security.

(c) Third Generation networks(3G):
It allows high data transfer rate for mobile devices and offers high speed wireless broadband services combining voice and data. To enjoy this service 3G enabled mobile towers and hand sets required.

(d) Fourth Generation networks(4G):
lt is also called Long Term Evolution(LTE) and also offers ultra broadband Internet facility such as high quality streaming video. It also offers good quality image and videos than TV.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 30.
What is browsing? Briefly explain the steps needed for browsing.
Answer:
The process of visiting a website is called browsing.
Web Browsing steps are given below:

  1. The browser determines the URL entered.
  2. The browser asks the DNS for URLS corresponding IP address (Numeric address)
  3. The DNS returns the address to the browser.
  4. The browser makes a TCP connection using the IP address.
  5. Then it sends a GET request for the required file to the server.
  6. The server collects the file and send it back to the browser.
  7. The TCP connection is released.
  8. The text and the images in the web pages are displayed in the browser.

Question 31.
Susheel’s email id is susheel@amail.com. He sends an email to Rani whose email id is rani@vahoo.com. How is the mail sent from susheel’s computer to Rani’s computer?
Answer:
To send an email first type the recipients address and type the message then click the send button. The website’s server first check the email address is valid, if it is valid it will be sent otherwise the message will not be sent and the sender will get an email that it could not deliver the message.

This message will be received by the recipient’s server and will be delivered to recipient’s mail box. He can read it and it will remain in his mail box as long as he will be deleted. Simple Mail Transfer Protocol(SMTP) is used.
The advantages of email are given below:

  1. Speed is high
  2. It is cheap
  3. We can send email to multiple recipients
  4. Incoming messages can be saved locally
  5. It reduces the usage of paper
  6. We can access mail box anytime and from anywhere.

The disadvantages are:

  1. it requires a computer, a modem, software and internet connection to check mail.
  2. Some mails may contain viruses.
  3. Mail boxes are filled with junk mail. So very difficult to find the relevant mail.

Plus One Internet and Mobile Computing Five Mark Questions and Answers

Question 1.
Your younger brother does not know the structure of an email message. Explain the structure of an email message.
Answer:
The email message contains the following fields:

  1. To: Recipient’s address will be enter here. Multiple recipients are also allowed by using coma.
  2. CC: Enter the address of other recipients to get a carbon copy of the message.
  3. bcc: The address to whom blind carbon copies are to be sent. This feature allows people to send copies to third recipient without the knowledge of primary and secondary recipients.
  4. From: Address of the sender
  5. Reply to: The email address to which replies are to be sent.
  6. Subject: Short summary of the message.
  7. Body: Here the actual message is to be typed

Plus One Computer Science Chapter Wise Questions and Answers Chapter 12 Internet and Mobile Computing

Question 2.
‘Email is the most popular, but most misused service of the internet’. Justify your answer.
Answer:
The advantages of email are given below:

  1. Speed is high
  2. It is cheap
  3. We can send email to multiple recipients
  4. Incoming messages can be saved locally
  5. It reduces the usage of paper
  6. We can access mail box anytime and from anywhere.

The disadvantages are:

  1. it requires a computer, a modem, software and internet connection to check mail.
  2. Some mails may contain viruses
  3. Mail boxes are filled with junk mail. So very difficult to find the relevant mail

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Students can Download Chapter 5 Introduction to C++ Programming Questions and Answers, Plus One Computer Science Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.

Kerala Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Plus One Introduction to C++ Programming One Mark Questions and Answers

Question 1.
IDE means _____________
Answer:
Integrated Development Environment

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 2.
We know that C++ is a high level language. From the following which statement is true.
(a) C++ contains English like statements.
(b) C++ contains mnemonics
(c) C++ contains only 0 and 1
(d) None of these
Answer:
(a) C++ contains English like statements.

Question 3.
C++ is a ______ language.
(a) High level
(b) Low level
(c) Middle level
(d) None of these
Answer:
(a) High level

Question 4.
C++ was developed at ___________
(a) AT & T Bell Laboratory
(b) Sanjose Laboratory
(c) Kansas University Lab
(d) None of these
Answer:
(a) AT & T Bell Laboratory

Question 5.
C++ is a successor of ___________ language
(a) C#
(b) C
(c) java
(d) None of these
Answer:
(b) C

Question 6.
The most adopted and popular approach to write programs is __________
Answer:
Structured programming

Question 7.
From the following which uses OOP concept
(a) C
(b) C++
(c) Pascal
(d) Fortran
Answer:
(b) C++

Question 8.
______________ is the smallest individual unit
Answer:
Token

Question 9
Pick the odd one out
(a) float
(b) void
(c) break
(d) Alvis
Answer:
(d) Alvis, the others are keywords.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 10.
Reserved words for the compiler is ____________
(a) Literals
(b) Identifier
(c) Keywords
(d) None of these
Answer:
(c) Keywords

Question 11.
Pick an identifier from the following
(а) auto
(b) age
(c) float
(d) double
Answer:
(b) age

Question 12.
Pick the invalid identifier
(a) name
(b) Date of birth
(c) age
(d) joining time
Answer:
(b) Date of birth, because it contains space.

Question 13.
Pick the octal integer from the following
(a) 217
(b) 0 X 217
(c) 0217
(d) None of these
Answer:
(c) 0217, an octal integer precedes 0

Question 14.
Pick the hexadecimal integer from the following
(a) 217
(b) 0 × 217
(c) 0217
(d) None of these
Answer:
(b) 0 × 217, a hexadecimal integer precedes 0×

Question 15.
From the following pick a character constant
(a) ‘A’
(b) ‘ALL’
(c) ‘AIM’
(d) None of these
Answer:
(a) ‘A’, a character enclosed between single quote

Question 16.
Non graphic symbol can be represented by using ___________
Answer:
Escape Sequence

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 17.
Manish wants to write a program to produce a beep sound. Which escape sequence is used to get an alert (sound)
(a) \a
(b) \d
(c) Vs
(d) None of these
Answer:
(a) \a.

Question 18.
Ajo wants to print a matter in a new line. Which escape sequence is used for this?
(a) \a
(b) \n
(c) \s
(d) None of these
Answer:
(b) \n

Question 19.
To represent null character is used ______
(a) \n
(b) \0
(c) \f
(d) As
Answer:
(b) \0

Question 20.
State True/ False a string is automatically appended by a null character.
Answer:
True

Question 21.
From the following pick a string constant
(a) ‘a’
(b) “abc”
(c) ‘abc’
(d) None of these
Answer:
(b) “abc”, a character constant must be enclosed between double quotes.

Question 22.
C++ was developed by __________
(a) Bjarne Stroustrup
(b) James Gosling
(c) Pascal
(d) None of these
Answer:
(a) Bjarne stroustrup

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 23.
From the following which is not a character constant.
(а) ‘c’
(b) ‘e’
(c) ‘d’
(d) “c”
Answer:
(d) “c”, It is a string constant the others are character constant.

Question 24.
From the following which is a valid declaration.
(a) int 91;
(b) int x;
(c) int 9x;
(d) int “x”;
Answer:
(b) int x;

Question 25.
Symbols used to perform an operation is called ____________
(a) Operand
(b) Operator
(c) Variable
(d) None of these
Answer:
(b) Operator

Question 26.
Consider the following
C = A + B. Here A and B are called
(a) Operand
(b) Operator
(c) Variable
(d) None of these,
Answer:
(b) Operand

Question 27.
The execution of a program starts at ________ function
Answer:
main()

Question 28.
The execution of a program ends with ________ function
Answer:
main()

Question 29.
______ is used to write single line comment
(a) //
(b) /*
(c) */
(d) None of these
Answer:
(a) //

Question 30.
const k = 100 means
(a) const float k = 100
(b) const double k = 100
(c) const int k = 100
(d) const char k = 100
Answer:
(c) const int k = 100

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 31.
Each and every statement in C++ must be end with ________
(а) Semicolon
(b) Colon
(c) full stop
(d) None of these
Answer:
(a) Semicolon

Question 32.
From the following select the input operator
(а) >>
(b) <<
(c) >
(d) <
Answer:
(a) >>

Question 33.
From the following select the output operator
(a) >>
(b) <<
(c) >
(d) <
Answer:
(b) <<

Question 34.
From the following which is known as a string terminator.
(а) ‘\0’
(b) ‘\a’
(c) ‘As’
(d) ‘\t’
Answer:
(a) ‘\0’

Question 35.
Adeline wrote a C++ program namely sum.cpp and she compiled the program successfully with no error. Some files are generated. From the following which file is a must to run the program
(a) sum.exe
(b) sum.obj
(c) sum.vbp
(d) sum.htm
Answer:
(a) sum.exe

Question 36.
Adeline wrote a C++ program namely sum.cpp and she compiled the program successfully with no error. Some files are generated namely sum.obj and sum.exe. From this which file is not needed to run the program
Answer:
sum.obj is not needed and can be deleted.

Question 37.
From the following which is ignored by the compiler
(a) statement
(b) comments
(c) loops
(d) None of these
Answer:
(b) comments

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 38.
To write a C++ program, from the following which statement is a must
(a) sum()
(b) main()
(c) #include<iostream>
(d) #include<iomanip>
Answer:
(b) main(). A C++ program must contains at least one main() function

Question 39.
State True / False
Comment statements are ignored by the compiler
Answer:
True

Question 40.
More than one input/output operator in a single statement is called _______
Answer:
Cascading of I/O operator

Question 41.
Is 0X85B a valid integer constant in C++? If yes why?
Answer:
Yes. It is a hexadecimal number.

Plus One Introduction to C++ Programming Two Mark Questions and Answers

Question 1.
Mr. Dixon declared a variable as follows
int 9age. Is it a valid identifier. If not briefly explain. the rules for naming an identifier.
Answer:
It is not a valid identifier because it violates the rule
The rules for naming an identifier is as follows:

  1. It must be start with a letter(alphabet)
  2. Under score can be considered as a letter
  3. White spaces and special characters cannot be used.
  4. Key words cannot be considered as an identifier

Question 2.
How many bytes used to store ‘\a’.
Answer:
To store ‘\a’ one byte is used because it is an escape sequence. An escape sequence is treated as one character. To store one character one byte is used.

Question 3.
How many bytes used to store “\abc”.
Answer:
A string is automatically appended by a null character.

  • Here one byte for \a (escape sequence).
  • One byte for character b.
  • One byte for character c.
  • And one byte for null character.
  • So a total of 4 bytes needed to store this string.

Question 4.
How many bytes used to store “abc”.
Answer:
A string is automatically appended by a null character.

  • Here one byte for a.
  • One byte for character b.
  • One byte for character c.
  • And one byte for null character.
  • So a total of 4 bytes needed to store this string.

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 5.
Consider the following code
int main()
{
cout<<“welcome to C++”;
}
After you compile this program there is an error called prototype error. Why it is happened? Explain.
Answer:
Here we used the output operator cout<<. It is used to display a message “welcome to C++” to use this operator the corresponding header file <iostream> must be included. We didn’t included the header file hence the error.

Question 6.
In C++ the size of the string “book” is 5 and that of “book\n” is 6. Check the validity of the above statement. Justify your answer.
Answer:
A string is automatically added by a null character(\0). The null character is treated as one character. So the size of string “book” is 5. Similarly, a null character (\0) is also added to “book\n”. \n and \0 is treated as single characters. Hence the size of the string “book\n” is 6.

Question 7.
Pick the odd man out. Justify
TOTSAL, TOT_SAL, totsal5, Tot5_sal, SALTOT, tot.sal
Answer:
tot.sal. Because it contains a special character dot(.). An identifier cannot contain a special character. So it is not an identifier. The remaining satisfies the rules of naming identifier. So they are valid identifiers.

Question 8.
Write a C++ statement to print the following sentence. Justify.
“\ is a special character”
answer:
cout<<“\\ is a special character”
\\ is treated as an escape sequence.

Question 9.
A student type a C++ program and saves it in his personal folder as Sample.cpp. After getting the output of the program, he checks the folder and finds three files namely Sample.cpp, Sample.obj and Sample.exe. Write the reasons for the generation of the two files in the folder.
Answer:
After the compilation of the program sample.cpp, the operating system creates two files if there is no error. The files are one object file (sample.obj) and one executable file(sample.exe). Now the source file(sample.cpp) and object file(sample.obj) are not needed and can be deleted. To run the program sample.exe is only needed.

Question 10.
Mention the purpose of tokens in C++. Write names of any four tokens in C++. (2)
Answer:
Token: It is the smallest individual units similar to a word in English or Malayalam language. C++ has 5 tokens.

  1. Keywords
  2. Identifier
  3. Literals (Constants)
  4. Punctuators
  5. Operators

Question 11.
The following are some invalid identifiers. Specify its reason.

  1. Sum of digits
  2. 1 year
  3. First jan
  4. For

Answer:

  1. Sum of digits → space not allowed hence it is invalid
  2. 1 year → First character must be an alphabet hence it is invalid
  3. First.jan → special characters such as dot (.) not allowed hence it is invalid.
  4. For → It is valid. That is it is not the keyword for

Question 12.
Some of the literals in C++ are given below. How do they differ?(5, ‘5’, 5.0, “5”)
Answer:

  • 5 – integer literal
  • ‘5’ – Character literal
  • 5.0 – floating point literal
  • “5”- string literal

Question 13.
Identify the invalid literals from the following and write reason for each:

  1. 2E3.5
  2. “9”
  3. ‘hello’
  4. 55450 (2)

Answer:
1. 2E3.5 → The mantissa part (3.5) will not be a floating point number. Hence it is invalid

3. ‘hello’ → It is a string hence it must be enclosed in double quotes instead of single quotes. It is invalid.

Question 14.
Which one of the following is a user defined name?
(a) Keyword
(b) Identifier
(c) Escape sequences
(d) All of these
Answer:
(b) Identifier

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 15.
Identify whether the following are valid identifiers or not? If not give the reason.

  1. Break
  2. Simple.interest (2)

Answer:

  1. Break – It is valid( break is the keyword, not Break);
  2. Simple.interest – It is not valid, because dot(.) is used.

Question 16.
Identify the invalid literals from the following and write a reason for each:

  1. 2E3.5
  2. “9”
  3. ‘hello’
  4. 55450 (2)

Answer:
1. Invalid, because exponent part should not be a floating point number

2. valid

Plus One Introduction to C++ Programming Three Mark Questions and Answers

Question 1.
Rose wants to print as follows
\n is used for New Line. Write down the C++ statement for the same.
Answer:
#include<iostream>
using namespace std;
int main()
{
cout<<“\\n is used for New Line”;
}

Question 2.
Alvis wants to give some space using escape sequence as follows
Welcome to C++. Write down the C++ statement for the same
Answer:
#include<iostream>
using namespace std;
int main()
{
cout<<“Welcome to \t C++”;
}

Question 3.
We know that the value of pi = 3.14157, a constant (literal). What is a. constant? Explain it.
Answer:
A constant or a literal is a data item its value doe not change during execution.
1. Integer literals:
Whole numbers without fractional parts are known as integer literals, its value does not change during execution. There are 3 types decimal, octal and hexadecimal.
Eg. For decimal “100, 150, etc

  • For octal 0100, 0240, etc
  • For hexadecimal 0 × 100, 0x1 A, etc

2. Float literals:
A number with fractional parts and its value does not change during execution is called floating point literals.
eg: 3.14157,79.78, etc

3. Character literal:
A valid C++ character enclosed in single

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 4.
Write a program to print the message “TOBACCO CAUSES CANCER” on screen.
Answer:
#include<iostream>
using namespace std;
int main()
{
cout<<” TOBACCO CAUSES CANCER”;
}

Question 5.
You are supplied with a list of tokens in C++ program, Classify and Categorise them under proper headings.
Explain each category with its features. tot_mark, age, M5, break, (), int, _pay, ;, cin.
Answer:
Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming 1

Question 6.
Write a program to print the message “SMOKING IS INJURIOUS TO HEALTH” on screen.
Answer:
#include<iostream>
using namespace std;
int mainO
{
cout<<” SMOKING IS INJURIOUS TO HEALTH”;
}

Plus One Introduction to C++ Programming Five Mark Questions and Answers

Question 1.
Consider the following code
The new line character is \n. The output of the following code does not contain the \n. Why it is happened? Explain.
Answer:
\n is a character constant and it is also known as escape sequence. This is used to represent the non graphic symbols such as carriage return key(enter key), tab key, backspace, space bar, etc. It consists of a backslash symbol and one more characters.
Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming 2

Plus One Computer Science Chapter Wise Questions and Answers Chapter 5 Introduction to C++ Programming

Question 2.
You are about to study the fundamentals of C++ programming Language. Do a comparative study of the basics of the new language with that of a formal language like English or Malayalam to familiarize C++? Provide sufficient explanations for the compared items in C++ Language.
Answer:
1. Character set:
To study a language first we have to familiarize the character set. For example, to study English language first we have to study the alphabets. Similarly here the character set includes letters(A to Z & a to z), digits(0 to 9), special characters(+, -, ?, *, /, …..) white spaces(non printable), etc.

2. Token:
It is the smallest individual units similar to a word in English or Malayalam language. C++ has 5 tokens

  • Keywords: These are reserved words for the compiler. We can’t use for any other purposes.
    Eg: float is used to declare variable to store numbers with decimal point. We can’t use this for any other purpose
  • Identifier: These are user defined words. Eg: variable name, function name, class name, object name, etc…
  • Literals (Constants): Its value does not change during execution
    eg: In maths % = 3.14157 and boiling point of water is 100.
  • Punctuators: In English or Malayalam language punctuation mark are used to increase the readability but here it is used to separate the tokens.
    eg:{,}, (,), ……..
  • Operators: These are symbols used to perform an operation(Arithmetic, relational, logical, etc…).

Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting

Students can Download Chapter 2 National Income Accounting Questions and Answers, Plus Two Economics Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in their examinations

Kerala Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting

Plus Two Economics National Income Accounting One Mark Questions and Answers

Question 1.
GNP – depreciation is called
(a) GDP
(b) NNP
(c) PCI
(d) PI
Answer:
(b) NNP

Question 2.
The GDP deflator is equal to
i) Real GDP-Nominal GDP
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img1
Answer:
iii) \(\frac{{ No minal GDP }}{\text { Real GDP }} \times 100\)

Question 3.
NFIA is included in:
(a) NNPFC
(b) NDPFC
(c) GDPFC
(d) All the above
Answer:
(a) NNPFC

Question 4.
Which among the following in a flow concept?
(a) export
(b) wealth
(c) capital
(d) foreign exchange reserve
Answer:
(a) export

HSSLive.Guru

Question 5.
When does net factor income from abroad become negative?
(a) NDP < NNP
(b) NNP < NDP
(c) NDP = NNP
(d) none of the above
Answer:
(b) NNP < NDP

Question 6.
When does GDP and GNP of an economy become equal?
(a) When net factor income from abroad is positive
(b) When net factor income from abroad is negative
(c) When net factor income from abroad is zero
(d) None ofthe above.
Answer:
(c) When net factor income from abroad is zero

Plus Two Economics National Income Accounting Two Mark Questions and Answers

Question 1.
Same job is done by a servant and housewife, whose service is included in the national income calculation? Why?
Answer:
Service of a servant is included in the national income calculation, whereas, the service of housewife is not included in the national income. This is because the housewife is not paid for the service she does.

Question 2.
From the following, classify the material into final goods and intermediary goods. Wheat, Bench, Bread, Wood, Rubber, Tyre.
Answer:

Final Goods Intermediary goods
Bench Wheat
Bread Wood
Tyre Rubber

Question 3.
Distinguish between real flow and money flow?
Answer:
Flow of goods and services from firms to households is called real flow. Factors of production receive reward for their services in the form of money. Households use this money to buy goods and services produced by firms. This flow of money from firms to households and back to firms is called money flow.

HSSLive.Guru

Question 4.
Some variables are given below. Classify them into Stock and Flow

  1. Wealth
  2. Income of a household
  3. Consumption
  4. Capital
  5. Money Supply
  6. Capital formation
  7. Inventories
  8. Saving of a household

Answer:
a. Stock

  • Wealth
  • Inventories
  • Capital
  • Money supply

b. Flow

  • Income of a household
  • Consumption
  • Capital formation
  • Saving of a household

Question 5.
GDP = C + I + G + (X – M) = C + S + T Derive the Budget Deficit and Trade Deficit equations from the above identity.
Answer:
GDP = C + I + G + (X – M) = C + S + T
Budget deficit = G – T
Trade deficit = M – X

Plus Two Economics National Income Accounting Three Mark Questions and Answers

Question 1.
“Transfer payments are not included in the national income calculation”. Do you agree? Justify your answer.
Answer:
Yes. Transfer payments like pension, old age pension, etc. are not included in the national income. This is because they are transfer earnings not generated by any economic activity. These payments are usually made by the government out of tax revenue collected from the public. Since these generated incomes are already included in national income calculation there is no need to include transfer payment in the national income calculation again.

Question 2.
State whether the following are included or excluded in the national income.

  1. purchase of second hand goods
  2. operating surplus
  3. production for self-consumption
  4. interest
  5. windfall gains and loses

Answer:

  1. Purchase of second hand goods – excluded
  2. operating surplus – included
  3. old age pension – excluded
  4. Production for self consumption – excluded
  5. interest – included
  6. windfall gains and loses – excluded

Question 3.
Provide appropriate term.
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img2
Answer:

  1. Value added
  2. GNP
  3. NNP
  4. NNPFC

HSSLive.Guru

Question 4.
Point out any 3 uses of national income accounting.
Answer:
The uses of national income accounting are given below.

  1. It shows the distribution of national income among the various factors of production.
  2. National income statistics indicate the contribution of different sectors in the economy.
  3. Structural changes in the economy can be assessed by the national income accounting.

Question 5.
Classify the following under proper heads.
Flow of teacher services, Flow of subsidies and taxes, Flow of factor rewards, flow of finished goods, Flow of consumption expenditure, Flow of import goods.
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img3
Answer:

Real Flow Money Flow
Flow of teacher services Flow of subsidies and taxes
Flow of finished goods Flow of factor rewards
Flow of import goods Flow of consumption

Question 6.

  • Does not includes prices of imported goods
  • Weights are different
  • It includes all goods and services
  • Includes prices of imported goods
  • Weights are constant
  • Does not include all goods and services

Answer:
a. Consumer price index

  • Includes prices of imported goods
  • Weights are constant
  • Does not include all goods and services

b. GDP deflator

  • Does not include prices of imported goods
  • Weights are different
  • It includes all goods and services

HSSLive.Guru

Question 7.
Assume that there are three goods produced in an economy and they are sold at different prices in dif-ferent years. Calculate GDP Deflator.
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img4
Answer:
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img5

Question 8.
Calculate Depreciation, Net Indirect Tax and NNPFC from the below data.
GDPMP = 11300
NDPMP = 10300
NDPFC = 10000
NFIA = 1500
Answer:
1. Depreciation = GDPMP – NDPMP
= 11300 – 10300
= 1000

2. Net Indirect tax = NDPMP – NDPFC
= 10300 – 10000 = 300

3. NNPFC = NDPFC + NFIA
= 10000 + 1500
= 11500

Plus Two Economics National Income Accounting Five Mark Questions and Answers

Question 1.
Find the odd one out. Justify your answer.

  1. GNP, NNP, CSO, GDP
  2. Salary, bonus, GPF, free housing, saving
  3. Smuggling, production of wheat, sale of second-hand goods, services of housewives
  4. Services of teacher, services of engineer, services of lawyer, services of housewife
  5. Unemployment allowances, scholarships, old age pension, support price.

Answer:

  1. C.S.O. Others are national income concepts.
  2. Saving. Others come under compensation to employees
  3. Production of wheat. Others are excluded from national income
  4. Services of housewife. Others are included in the national income calculation.
  5. Support price. Others are transfer payments.

Question 2.
Match the following.

A B
NNP GDP – net factor income from abroad
GNP Personal income – direct taxes
Value added GNP-depreciation
GDP at market prices value of output – intermediate consumption
Disposable income GDP at factor cost – net indirect tax

Answer:

A B
NNP GNP – depreciation
GNP GDP – net factor income from abroad
Value added Value of output- intermediate consumption
GDP at market prices GDP at factor cost – net indirect tax
Disposable income Personal income – direct taxes

Question 3.
Categorize the following into stocks and flows, wealth, salary, food grain stock, foreign exchange reserves, export, gross domestic saving, capital, change in money supply, quantity of money, capital formation.
Answer:

Stock Flow
Wealth Export
Foreign exchange reserves Salary
Food grain stock Gross domestic saving
Capital Change in money supply
Quantity of money Capital formation

HSSLive.Guru

Question 4.
The phase of circular flow of income in a two sector economy is given below.
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img6

  1. Complete the diagram.
  2. Explain the process of circular flow

Answer:

1.

Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img7
2. Circular flow of income:
The concept that the aggregate value of goods and services produced in an economy is going around in a circular way. Either as factor payments, or as expenditures on goods and services, or as the value of aggregate production.

Question 5.
Suppose that in a two sector economy the value of finished goods is equal to ₹100 crore and the income generated as factor rewards is also equal to ₹100 crore. The households spend only ₹80 crore.

  1. What will happen to the circular flow?
  2. Which system can be introduced to correct the circular flow?
  3. Name the leakages and injections.

Answer:

  1. There will be a mismatch between the real flow and money flow in the circular flow. In other words, the flow will be broken.
  2. As a corrective measure, the financial system can be introduced.
  3. The leakages is the difference between the income generates and household spending.

This is saving. The injection are the savings that the households, firms and the government take from the financial institutions as borrowings.

HSSLive.Guru

Question 6.
1. Estimate the NI of India and Pakistan from the data given below.
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img8
2. Which method is used here?
3. What are the other methods of measuring national income?
Answer:

  1. National income of India = ₹2885 crore
    National income of Pakistan = ₹1860 crore
  2. The method used here is the product method or value added method.
  3. Income method and expenditure method are the other two method of measuring national income.

Question 7.
What do you mean by GDP deflator? How far GDP deflator differs from Consumer Price Index?
Answer:
The ratio of nominal to real GDP is a well known index of prices. This is called GDP Deflator. GDP deflator differs from Consumer Price Index. The major points of difference are given below.

1. The goods purchased by consumers do not represent all the goods which are produced in a country. GDP deflator takes into account all such goods and services.

2. CPI includes prices of goods consumed by the representative consumer; hence it includes prices of imported goods. GDP deflator does not include prices of imported goods.

3. The weights are constant in CPI – but they differ according to production level of each good in GDP deflator.

Question 8.
Write down some of the limitations of using GDP as an index of welfare of a country.
Answer:
GDP is the sum total of value of goods and services created within the geographical boundary of a country in a particular year. It gets distributed among the people as incomes. So we may be tempted to treat higher level of GDP of a country as an index of greater well-being of the people of that country. But there are at least three reasons why this may not be correct. They are discussed below.

1. Distribution of GDP – how uniform is it:
If the GDP of the country is rising, the welfare may not rise as a consequence. This is because the rise in GDP may be concentrated in the hands of very few individuals or firms. For the rest, the income may, in fact, have fallen.

In such a case the welfare of the entire country cannot be said to have increased. If we relate welfare improvement in the country to the percentage of people who are better off, then surely GDP is not a good index.

2. Non-monetary exchanges:
Many activities in an economy are not evaluated in monetary terms. For example, the domestic services women perform at home are not paid for. The exchanges which take place in the informal sector without the help of money are called barter exchanges.

This is a case of underestimation of GDP. Hence GDP calculated in the standard manner may not give us a clear indication of the productive activity and well-being of a country.

3. Externalities:
Externalities refer to the benefits (or harms) a firm or an individual causes to another for which they are not paid (or penalized). Externalities do not have any market in which they can be bought and sold. Therefore, if we take GDP as a measure of welfare of the economy we shall be overestimating the actual welfare.

This was an example of negative externality. There can be cases of positive externalities as well. In such cases, GDP will underestimate the actual welfare of the economy.

HSSLive.Guru

Question 9.
Assume that GDP in the year 2007 was ₹1,200 which rose to ₹1,800 in 2008. Calculate GDP deflator.
Answer:
GDP deflator = Current year GDP / Base year GDP x 100
= 1800/1200 × 100
= 1.5 × 100
= 1.5 (in percentage terms 150)

Question 10.
Relate and complete the identities/equations in column A with column B.
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img9
Answer:
Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img10

Question 11.
Estimate the Gross National Product at market price and GNP at factor cost through the expenditure method.

Item Amount (in Crores)
Inventory investment 15
Net factor income from abroad 10
Personal consumption expenditure 475
Gross residential construction investment 48
Exports 25
Government purchase of goods and services 175
Gross public investment 15
Gross business fixed investment 38
Imports 12
Net indirect tax 8

Answer:
GNPMP = private consumption expenditure + govt, final consumption expenditure( gross fixed capital formation + change in stock or inventory investment) + net export + net factor income from abroad
= 475 + 175 + 101 (i.e., 48 + 15 + 38) + 15 + 13
= ₹779 crores.
GNPC = GNPUD – net indirect taxes
= 779 – 8 = ₹771 crores

Question 12.
Suppose that in a two sector economy, the value o finished goods is equal to ₹200 crore and the income generated as factor rewards is equal to ₹200 crore. The households spend only ₹180 crore. The remaing 20 crore economy saved then.

  1. Is ₹20 (saving) included in the circular flow?
  2. Which system can be introduced to correct the circular flow?
  3. Is saving leakage or injection.

Answer:

  1. No, saving (₹20) is excluded in the circular flow.
  2. Financial system can be introduced to correct the circular flow.
  3. Yes, saving is a leakage.

Question 13.
Fill in the blanks

  1. GNPMP – ……….. = NNPMP
  2. NNPMP – ………… = NNPFC
  3. GDPFC+ – ………… = GDPMP
  4. GDP + -………….. = GNP

Answer:

  1. GNPMP – depreciation = NNPMP
  2. NNPMP – net indirect tax = NNPFC
  3. GDPFC + net indirect tax = GDPMP
  4. GDP + net factor income from aborad = GNP

HSSLive.Guru

Question 14.
Write down the 3 identities of calculating the GDP of a country by the 3 methods. Also briefly explain why each of those should give us the same value of GDP.
Answer:
Gross National Product (GNP) equals Gross National Income equals Gross National Expenditure, i.e.
GNP = GNI = GNE
These are equal because national income is a circular flow of income. Aggregate expenditure is equal to aggregate output which in turn, is equal to aggregate income. However each method has some different items, yet they show exactly identical results.

Their identity can be shown in the following manner:
Reconciling Three Methods of Measuring Gross

Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img11

Question 15.
The economic recession of 2008 affected the market economics in general and the US in particular. Thou-sands of Indians working abroad lost their job especially in IT and banking sectors and they returned to India. Evaluate its consequences on Indian economy with regard to the following macro variables.

  1. The value of GNP
  2. Gneral unemployment level
  3. Foreign exchange rate

Answer:

  1. The value of GNP decreases due to reduction in NFIA.
  2. General unemployment level increases.
  3. Foreign exchange rate increases.

Plus Two Economics National Income Accounting Eight Mark Questions and Answers

Question 1.
Given below some macro economic indicators. Derive the equations of the following terms:

  1. GNP
  2. NNP
  3. NNP at factor cost
  4. Personal income
  5. Personal disposable income
  6. Private Income
  7. National Disposable Income

Answer:
1. GNP = GDP + Factor income earned by the domestic factors of production employed in the rest of the world – Factor income earned by the factors of production of the rest of the world employed in the domestic economy

2. NNP = GNP – Depreciation

3. NNP at factor cost = National Income (NI) = NNP at market prices – (Indirect taxes – Subsidies)

4. Personal income (PI) = NI – Undistributed profits – Net interest payments made by households – Corporate tax + Transfer payments to the households from the government and firms.

5. Personal Disposable Income (PDI) = PI – Personal tax payments – Non-tax payments.

6. Private Income = Factor income from net domestic product accruing to the private sector + National debt interest + Net factor income from abroad + Current transfers from government + Other net transfers from the rest of the world

7. National Disposable Income = Net National Product at market prices + other current transfers from the rest of the world

HSSLive.Guru

Question 2.
Prepare a seminar report on the topic ‘Measurement of National Income’.
Answer:
Measurement of National Income Respected teachers and dear friends,
The topic of my seminar paper is ‘measurement of national income or the methods of measuring national income’. The concept of national income occupies an important place in economic theory.

National income is the aggregate money value of all goods and services produced in a country during an accounting year. In this seminar paper, I would like to present various methods of measuring national income.

Content:
National income can be measured in different ways. Generally there are three methods for measuring national income. They are

  1. Value-added method
  2. Expenditure method
  3. Income method

1. Value-added method:
The term that is used to denote the net contribution made by a firm is called its value-added. We have seen that the raw materials that a firm buys from another firm which are completely used up in the process of production are called ‘intermediate goods’.

Therefore the value-added of a firm is the value of production of the firm – value of intermediate goods used by the firm. The value-added of a firm is distributed among its four factors of production, namely, labor, capital, entrepreneurship, and land.

Therefore wages, interest, profits, and rents paid out by the firm must add up to the value-added of the firm. Value-added is a flow variable.

2. Expenditure Method:
An alternative way to calculate the GDP is by looking at the demand side of the products. This method is referred to as the expenditure method. The aggregate value of the output in the economy by expenditure method will be calculated.

In this method we add the final expenditures that each firm makes. Final expenditure is that part of expenditure which is undertaken not for intermediate purposes.

3. Income Method:
As we mentioned in the beginning, the sum of final expenditures in the economy must be equal to the incomes received by all the factors of production taken together (final expenditure is the spending on final goods, it does not include spending on intermediate goods).

This follows from the simple idea that the revenues earned by all the firms put together must be distributed among the factors of production as salaries, wages, profits, interest earnings, and rents.
That is GDP = W + P + In + R

Conclusion:
Thus it can be concluded that there are three methods for measuring national income. These methods are value-added method, income method and expenditure method. Usually in estimating national income, different methods are employed for different sectors and sub sectors.

HSSLive.Guru

Question 3.
From the following data, calculate personal income and personal disposable income (₹in Crores).

  1. NDPFC – 8,000
  2. net factor income from abroad – 200
  3. Undistributed profit – 1,000
  4. Corporate tax – 500
  5. Interest received by households – 1,500
  6. Interest paid by households – 1,200
  7. Transfer income – 300
  8. Personal Tax – 500

Answer:
Personal income = NDPfc + Net factor income from abroad – undistributed profits – corporate taxes + transfer payments + net interest received from households.
= 8000 + 200-1000 – 500 + 300 (1500 -1200)
= 7,300 crores
Personal disposable income = Personal income – personal tax
= 7,300 – 500 = 6,800 crores

Question 4.
Production generates income. Prove this statement with the help of a simple two sector model of circular flow of income.
Answer:
circular flow of income:
It is a pictorial representation of interdependence or interrelationship between the various sectors of the economy. It is a concept associated with income earning and spending. The circular flow of income in a simple economy works on the basis of certain assumptions.
They are as follows:

  1. Households and firms are the only two sectors in an economy (2 sector model)
  2. Households supply factor services to firms.
  3. Firms hire factor services households
  4. Household spends their entire income on consumption and thereby no savings are left with them.
  5. Firms sell their entire products to the households
  6. There is no government in the economy.
  7. The economy is not related to any other economies or the economy is a ‘closed’ system. As a result, there is no export or imports from the economy.

In such an economy, there would be two types of markets.
They are:

  1. product-market for goods and services
  2. factor markets for buying and selling various factor services.

The relationship between the sectors of an economy can be explained with the help of a diagram.

Plus Two Economics Chapter Wise Questions and Answers Chapter 2 National Income Accounting img12

The households own the factors of production such as land, labour, capital, and organization. The households sell these factors of production to the firms for producing goods and services are known as real flow. The rewards for factors of production are rent to land, interest to capital, wage to the labour and profit to the entrepreneur is known as the money flow.

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