तुम जियो हज़ारों साल साल के दिन हों पचास हज़ार Summary in Malayalam Hindi Class 7

Reading SCERT Class 7 Hindi Solutions and तुम जियो हज़ारों साल साल के दिन हों पचास हज़ार Tum Jiyo Hazaro Saal Saal Ke Din Ho Pachaas Hazaar Summary in Malayalam Hindi before the exam can save a lot of preparation time.

Tum Jiyo Hazaro Saal Saal Ke Din Ho Pachaas Hazaar Summary in Malayalam

तुम जियो हज़ारों साल साल के दिन हों पचास हज़ार Summary in Malayalam

ഇന്നലെ നിമ്മിയുടെ പിറന്നാളായിരുന്നു. രാവിലെ മുതൽ സമ്മാനങ്ങൾ തുറക്കുന്ന തിരക്കിലായിരു ന്നു. വിനോദ് അങ്കിൾ നൽകിയ ജന്മദിന കാർഡ് വളരെ മനോഹരമായിരുന്നു. അതിൽ ഒരു കാർട്ടൂൺ ഉണ്ടാക്കി, “നിങ്ങൾക്ക് ആയിരക്കണക്കിന് വർഷങ്ങൾ ജീവിക്കാം, ഒരു വർഷത്തിൽ നിങ്ങൾക്ക് അമ്പതിനായിരം ദിവസങ്ങൾ ഉണ്ടായേക്കാം’ എന്നെ ഴുതിയിരുന്നു.

അതെ എന്തൊരു കവിതയാണിത്?
അൽപ്പം ആശയക്കുഴപ്പത്തോടെ. അവൾ മുത്തശ്ശന്റെ അടുത്തേക്ക് ഓടി. അവൾ കാർഡ് കാണിച്ചു പറ ഞ്ഞു, “മുത്തശ്ശാ, പക്ഷേ അമ്പതിനായിരം വളരെ കൂടുതലാണ് അല്ലേ? ഇത്രയും വർഷം ആരാണ് ജീവിച്ചത്?’ മുത്തശ്ശൻ പറഞ്ഞു, “ഇതൊരുതരം പ്രാർത്ഥനയാണ് അർത്ഥമാക്കുന്നത്.

तुम जियो हज़ारों साल साल के दिन हों पचास हज़ार Summary in Malayalam Hindi Class 7 1

ലോകം നിങ്ങളെ എപ്പോഴും ഓർക്കുന്ന തരത്തിലുള്ള എന്തെ ങ്കിലും ചെയ്യുക. “എന്താണതിന്റെ അർത്ഥം? നിമ്മി കുറച്ചുകൂടി മുന്നോട്ട് വന്ന് ചോദിച്ചു.

അർത്ഥം ഉദാഹരണമായി മദർ തെരേസ യോ, അമീർ ഖുസ്രോയോ, ഗാന്ധിജിയോ പോലുള്ള ആളുകൾ. ഈ ആളുകൾ ഇന്ന് ജീവിച്ചിരിപ്പില്ല. പക്ഷേ എല്ലാവരും അവരെ ഇപ്പോഴും ഓർക്കുന്നു.

മനസ്സിലായി. നന്നായി എഴുതിയിരിക്കുന്നു. നിമ്മി പറഞ്ഞു. “അതെ, ഈ കവിത, പക്ഷേ ഇത് ഈ രണ്ട് വാക്യങ്ങൾ എഴുതിയത് മിർസ ഗാലിബ് ആണ്. അവളുടെ കയ്യിൽ നിന്നും കാർഡ് വാങ്ങി മുത്തശ്ശൻ പറഞ്ഞു.

ഹേ…… മുത്തശ്ശാ ഈ ഈരടികൾ എഴുതിയ ഗാലിബ് എവിടെ നിന്നാണ് വന്നത്? ഗാലിബല്ല, ഗലീ ബയാണ്. ഉറുദു ഭാഷയിലെ കവിയായിരുന്നു അദ്ദേഹം. അദ്ദേഹത്തിന്റെ കവിതയിൽ രണ്ട് രണ്ട് വരി കൾ ധാരാളം ഉണ്ട്. ഈ രണ്ട് വരികളെയാണ് കവിത എന്നു പറയുന്നത്.
“നിങ്ങൾ ആയിരം വർഷം ജീവിക്കട്ടെ, ഓരോ വർഷവും അമ്പതിനായിരം ദിവസം നീണ്ടുനിൽക്കട്ടെ.

പറഞ്ഞുകൊണ്ട് മുത്തശ്ശൻ എഴുന്നേറ്റു. നിമ്മി ഉടൻ തന്നെ അദ്ദേഹത്തിന്റെ വഴി തടഞ്ഞു പറഞ്ഞു, “മുത്തശ്ശാ, മറ്റേതെങ്കിലും കവിയെക്കുറിച്ച് പറയൂ…… ശരി, ഗാലിബിനെക്കുറിച്ച് മാത്രം പറയൂ, ഞാൻ ഉദ്ദേശിക്കുന്നത് ഗാലിബാണ്. ഹേയ്, ഞാൻ പിന്നീട് പറയാം. ഇനി പച്ചക്കറി വാങ്ങാൻ പോകണം.

तुम जियो हज़ारों साल साल के दिन हों पचास हज़ार Summary in Malayalam Hindi Class 7 2

तुम जियो हज़ारों साल साल के दिन हों पचास हज़ार लेखक परिचय शिराज़ हुसैन

शिराज़ हुसैन, एक बहुविषयक दृश्य कलाकार हैं। वह फ्री-हैंड ड्राइंग, ग्राफिक डिज़ाइन के विशेषज्ञ हैं। शिरज़ संस्थापक कलाकार हैं, और दख्वाब तन्हा कलेक्टिव के बैनर तले वे और उनकी टीम हिंदी, उर्दू, पंजाबी और अन्य भाषाओं के साहित्य और कवित को लोकप्रिय बनाने के लिए पोस्टर कला के प्रारूप के माध्यम से काम करते हैं। वे बाल पत्रिकओं के लेखक और चित्रकार भी हैं। उन्होंने जामिया मिलिया विश्वविद्यालय के ललित कला विभाग में कई वर्षों तक व्यावहारिक कलाएँ सिखाई हैं। हाल ही में वे मिर्ज़ा गालिब पर बच्चों के लिए किताब बनाने में लगे हैं। फिलहाल वे बच्चों की मैगज़ीन साइकिल और प्लूटो में अपने आर्ट वर्क से सहयोग करते हैं साथ ही वे इसके लिए लिखते भी है। फरवरी 2024 में उनकी लिखी बच्चों की किताब (Lunar soil) चंद्रमा की मिट्टी का विमोचन हुआ, जो एकतारा जुगुनू प्रकशन से प्रकाशित है।

ശിരാജ് ഹുസൈൻ ഒരു മൾട്ടി ഡിസിപ്ലിനറി വിഷൽ ആർട്ടിസ്റ്റാണ്. ഫ്രീ ഹാൻഡ് ഡ്രോയിംഗ് ഗ്രാഫിക് ഡിസൈനിൽ അദ്ദേഹം വിദഗ്ധനാണ്. ശിരാജ് സ്ഥാപനക കലാകാരനാണ്, ദഖ്വാബ് തൻഹ കളക്ടീവിന്റെ ബാനറിന് കീഴിൽ ഹിന്ദി, ഉറുദു, പഞ്ചാബിയിലേയും മറ്റു ഭാഷകളി ലേയും സാഹിത്യവും, കവിതയും പോസ്റ്റർ ആർട്ടിന്റെ ഫോർമാറ്റിലൂടെ ജനപ്രിയമാക്കുന്നതിന് അദ്ദേഹവും സംഘവും പ്രവർത്തിക്കുന്നു. കുട്ടികളുടെ മാസികകളുടെ എഴുത്തുകാരനും ചിത്ര കാരനുമാണ് അദ്ദേഹം. ജാമിയ മിലിയ സർവ്വകലാശാലയിലെ ഫൈൻ ആർട്സ് വിഭാഗത്തിൽ വർഷങ്ങളോളം അപ്ലൈഡ് ആർട്സ് പഠിപ്പിച്ചിട്ടുണ്ട്. അടുത്തിടെ മിർസ ഗാലിബിനെക്കുറിച്ച കുട്ടികൾക്കായി ഒരു പുസ്തകം നിർമ്മിക്കുന്ന തിരക്കിലാണ് അദ്ദേഹം. കുട്ടികളുടെ മാസികക ളായ സൈക്കിൾ, പ്ലൂട്ടോ എന്നിവയിലേക്ക് അദ്ദേഹം ഇപ്പോൾ തന്റെ കലാസൃഷ്ടികൾ സംഭാ വന ചെയ്യുകും, അതുകൂടാതെ എഴുതുകയും ചെയ്യുന്നു. 2024 ഫെബ്രുവരിയിൽ കുട്ടികളുടെ പുസ്തകം ‘ചന്ദ്രമാ കീ മിട്ടി പുറത്തിറങ്ങി. അത് ഏകതാരയുടെ ജുഗുനു പ്രകാശൻ പ്രസിദ്ധീ കരിച്ചു.

तुम जियो हज़ारों साल साल के दिन हों पचास हज़ार शब्दार्थ

  • कल – ഇന്നലെ, yesterday നാളെ tomorrow
  • सुबह – രാവിലെ, morning
  • तोहफा – സമ്മാനം, gift
  • खोलना – തുറക്കു, to open
  • सुंदर – സുന്ദരം, beautiful
  • साल – വർഷം, year
  • उलझी सुलझी – പ്രശ്നം പരിഹരിക്കുക
  • नाना – മുത്തശ്ശൻ (അമ്മയുടെ അച്ഛൻ) grand father
  • पचास हज़ार – അമ്പതിനായിരം, fifty thousand
  • दुनिया – ലോകം, world
  • याद – ഓർമ്മ, memory
  • जिंदा – ജീവനോടെ, alive
  • बढिया बात – വലിയ കാര്യം, great thing
  • रास्ता – വഴി, road, path
  • एकदम – പെട്ടെന്ന്, at once
  • शायर – കവി, poet
  • दुआ – പ്രാർത്ഥന, prayer
  • मतलब – അർത്ഥം, meaning
  • सब्जी – ഉള്ളിൽ

Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration

Reviewing SCERT Kerala Syllabus 7th Standard Basic Science Notes Pdf and Class 7 Basic Science Chapter 5 Question Answer Notes Solutions Pdf Human Body A Wonder Digestion and Respiration can uncover gaps in understanding.

Human Body A Wonder Digestion and Respiration Class 7 Questions and Answers Notes

Class 7 Basic Science Chapter 5 Human Body A Wonder Digestion and Respiration Question Answer Pdf

Basic Science Class 7 Chapter 5 Question Answer Kerala Syllabus

Let Us Assess

Question 1.
Which of the following combination is correct?
a. Goat, Horse, Crow, Pigeon (Herbivores)
b. Leopard, Vulture, Elephant, Lizard (Carnivores)
c. Man, Hen, Monkey, Peacock (Omnivores)
Answer:
c. Man, Hen, Monkey, Peacock

Question 2.
In which of the following organ,digestion is completed?
a. Mouth b. Small intestine c. Large intestine d. Stomach
Answer:
Small intestine

Question 3.
What are the precautionary steps to be taken to prevent tooth decay?
Answer:

  • Wash mouth properly after having food
  • Brush teeth in the morning, before breakfast and at night, after dinner
  • Clean mouth well after consuming sweets

Question 4.
Compare the dentition of a six year old child and that of an adult.
Answer:
In infants, teeth development starts around the age of six months. These teeth are known as milk teeth. Ten milk teeth each develop at the upper and lower jaws (total – 20). Permanent teeth are those that replace milk teeth when they fall off. If the permanent teeth break or fall off, new teeth will not grow in its place. There will be 32 permanent teeth in an adult person.

Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration

Question 5.
A person is lying down and eating food. Do you think the food will reach the stomach? Why?
Answer:
Yes, the food will reach the stomach. This is due to peristalsis. The wave-like movement of the oesophageal wall helps food to reach the stomach. This movement is called peristalsis.

Class 7 Basic Science Chapter 5 Extended Activities Answers

Question 1.
Like man, other organisms also breathe. Observe the body movements of cat, cow etc during inhalation and exhalation.
Answer:
Hint:
Watch their chests and abdomens. As they inhale, their chests and bellies expand to take in air. When they exhale, the chest and belly contract to push air out.

Question 2.
Breathe into a mirror. What do you see? What is the reason?
Answer:
The surface of the mirror fades up. The exhaled air contains moisture. This moisture condenses on the reflecting surface of the mirror.

Question 3.
List out the ideas to be covered in the seminar to be organized in the school on the topic, “Respiratory System and Health” and display them on the bulletin board.
Answer:
Hints:

  • Discover how oxygen gets in and carbon dioxide gets out. .
  • Explore healthy habits for strong lungs, like exercise and good air quality.
  • Learn about common respiratory illnesses and how to prevent them.

Question 4.
Have you ever noticed air pump in the aquarium? Find out its significance.
Answer:
Fishes breath the air dissolved in water. The water in the tanks may run out due to continuous consumption. So, in order to keep the water level steady, sir pumps are used in aquariums.

Class 7 Basic Science Chapter 5 Intext Question and Answers

Question 1.
Compile a list of the organisms you have observed, and their respective food. Present it in the class room.
Answer:
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 1

Question 2.
Classify the following living organisms into herbivore, carnivore and omnivore. Write it in the Science Diary.
• Cow
• Goat
• Cat
• Bear
• Rabbit
• Human
• Snakes
• Elephant
• Lion
• Tiger
• Crow
• Wolf
Answer:

Herbivore Carnivore Omnivore
Cow Tiger Human
Goat Wolf Crow
Rabbit Lion Cat
Elephant Snake Bear

Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration

Question 3.
What are the changes that occur to food in the mouth?
Answer:

  • It mixes with saliva
  • It gets cut into pieces
  • It gets chewed
  • It gets masticated

Question 4.
Find out the distinctive features of teeth in carnivorous and herbivorous animals and understand how closely the shape of the teeth is related to their food habits.
Answer:
The canines of carnivores are much developed and it helps in biting and tearing meat. Incisors in herbivores help to bite and tear food, and, premolars and molars to masticate the food.

Question 5.
What are the functions of the tongue?
Answer:

  • The taste buds on the tongue, helps us to sense taste.
  • Helps in swallowing
  • Tongue helps to remove things trapped between teeth

Question 6.
From where does saliva is produced?
Answer:
In salivary glands

Question 7.
To which part of the digestive system does food first reach from the mouth?
Answer:
To Oesophagus

Question 8.
What is oesophagus?
Answer:
The oesophagus is a long tube, that connects the mouth to the stomach. It is made of muscles.

Question 9.
How do the nutrients in the digested food get absorbed into the blood?
Answer:
Villi are the small finger-like projections present in the wall of small intestine. Nutrients in the digested food are absorbed into the blood through the villi.

Question 10.
Complete the flow chart showing the various stages of nutrition.
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 2
Answer:
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 3

Question 11.
Observe the diagrammatic representation of human digestive system. Write in your Science Diary the names and functions of the labelled parts.
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 4
Answer:

Part Function
A – Salivary gland Production of saliva
B – Oesophagus Passes food from the mouth to the stomach
C – Stomach Partial digestion of food
D – Small intestine Absorption of nutrients
E – Large intestine Absorption of water and salts
F – Rectum Storage of digestive waste

Question 12.
Analyze the picture and record in the Science Diary the various stages of nutrition in amoeba.
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 5
Answer:

  • Fig 1- Approaches food material
  • Fig 2-Surrounds the food material and consume it.
  • Fig 3-Digest the food material
  • Fig 4-Absorbs the nutrients from the digested food.
  • Fig 5-Assimilate the digested food
  • Fig 6-Egestion of digestive waste.

Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration

Question 13.
Observe the pictures of the digestive system of some animals. Do the digestive system of these animals have any similarity with our digestive system? Discuss.
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 6
Answer:
Yes, Like the digestive system of human beings, these animals have mouth, oesophagus, stomuch, small intestine, large intestine, return etc.

Question 14.
What happens to the diaphragm during inhalation and exhalation?
Answer:
During inhalation, the diaphragm contracts and flattens. During exhalation, the diaphragm relaxes and both the diaphragm and the lungs returns to their previous positions.

Question 15.
When does the thoracic cavity increase in volume during inhalation or exhalation?
Answer:
During inhalation.

Question 16.
Complete the flowchart of the respiratory tract using the indicators.
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 7
Answer:
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 8

Question 17.
Observe the table showing the levels of various components in the inhaled and exhaled air.
Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration Img 9
a) Is the level of all components in inhaled and exhaled air the same? Which all components show difference in percentage?
Answer:
The level of all components in inhaled and exhaled air are not same.
Components that shows difference are – Oxygen, Carbon dioxide, Moisture

b) Which of the components are in higher level and lower level in exhaled air than in inhaled air?
Answer:
In higher level – Carbon dioxide, Moisture
In lower level – Oxygen

c) Which gas is utilized by us in respiration?
Answer:
Oxygen

Question 18.
Which gas do plants take in during respiration?
Answer:
Oxygen

Question 19.
Name the gas released by plants during respiration?
Answer:
Carbon dioxide

Question 20.
Where does the gas exchange take place in plants?
Answer:
In stomata, fine pores found in leaves and tender stem.

Human Body A Wonder Digestion and Respiration Class 7 Notes Extra Questions and Answers

Question 1.
What is nutrition?
Answer:
Nutrition is the process by which organisms obtain and utilize food.

Question 2.
What is the first stage of nutrition?
Answer:
Ingestion

Question 3.
Which is the outermost layer of the teeth?
Answer:
Enamel

Class 7 Basic Science Chapter 5 Question Answer Notes Human Body A Wonder Digestion and Respiration

Question 4.
What is peristalsis?
Answer:
The wave-like movement of the wall of the oesophagus , helps food to reach the stomach. This movement is called peristalsis.

Question 5.
What are thoracic cavity, Abdominal cavity, and diaphragm?
Answer:
Human lungs are placed in a space inside the chest called thoracic cavity. The cavity below the thoracic cavity is the abdominal cavity. Diaphragm is the muscular wall that separates the thoracic and abdominal cavity.

Question 6.
What is respiratory tract?
Answer:
Air entering through the nostrils reaches alveoli of the lungs. Respiratory tract is this air passage from nostrils to lungs.

Question 7.
In those given below, find out which one is different from others.
a) Goat, elephant, lion, rabbit
b) Vulture, crow, hen, peacock
c) Lion, tiger, deer, wolf
Answer:
a) Lion – Lion is carnivore, others are herbivores
b) Vulture – Vulture is carnivore, others are omnivore
c) Deer – Deer is herbivore, others are carnivore ,

Question 8.
Identify the relation and fill up the blank.
a) Infants: Milk teeth
Adults: …………..
b) Pancreas: Pancreatic juice
Liver: …………..
Answer:
a) Permanent teeth
b) Bile

Question 9.
How does the digestive waste is removed from the body?
Answer:
After the absorption of nutrients, the residues in the digested food move to the large intestine. Water and some salts are absorbed into the large intestine from the digestive waste as needed by the body. Later, the digestive waste stored in the rectum is removed through anus. This process of digestive waste removal from our body is called egestion.

Question 10.
Which is the hardest substance in the human body?
Answer:
Enamel

Question 11.
What is inhalation and exhalation?
Answer:
Inhalation is the process of taking air into the lungs. Exhalation is the process of movement of air from lungs to outside.

Question 12.
Find out how gas exchange takes place in a protozoan like paramecium?
Answer:
Paramecium takes in oxygen dissolved in the surrounding water through the cell membrane and gives out carbon dioxide,

Question 13.
Define Respiration.
Answer:
The process through which organisms receive oxygen from their environment and eliminate carbon dioxide is called respiration.

Human Body A Wonder Digestion and Respiration Class 7 Notes

  • Nutrition is the process by which organisms obtain and utilize food.
  • The first stage is ingestion.
  • Digestion is the second stage of nutrition.
  • Nutrients in the digested food are absorbed into the blood through the villi. This is the third stage in nutrition and the process is called absorption.
  • The nutrients that reached the blood become part of the body. This is the fourth stage of nutrition and this process is called assimilation.
  • The process of digestive waste removal from our body is called egestion. This is the fifth stage of nutrition.
  • The process through which organisms receive oxygen from their environment and eliminate carbon dioxide is called respiration.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Reviewing SCERT Kerala Syllabus 7th Standard Basic Science Notes Pdf and Class 7 Basic Science Chapter 4 Question Answer Notes Solutions Pdf When Light Reflects can uncover gaps in understanding.

When Light Reflects Class 7 Questions and Answers Notes

Class 7 Basic Science Chapter 4 When Light Reflects Question Answer Pdf

Basic Science Class 7 Chapter 4 Question Answer Kerala Syllabus

Let Us Assess

Question 1.
Examine the following table and find the odd one out.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 1
Answer:
Transparent objects – Box filled with smoke
Translucent objects – Tiles
Opaque objects – Clear water, Fog

Question 2.
Observe the pictures. Which type of reflections do you see here?
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 2
Answer:
Picture 1 – Regular reflection
Picture 2 – Diffused reflection

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 3.
Observe the following situations. Find out which type of reflection takes place in each.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 3
Answer:

Situation Reflection
Ornaments shine Diffused reflection
We get light inside the home during day time Diffused reflection
A polished furniture shines Regular reflection
See reflection of trees on stagnant water Regular reflection

Class 7 Basic Science Chapter 4 Extended Activities Answers

Question 1.
Arrange three benches in a room as shown in the figure given below. Arrange one of them perpendicular to the wall and keep the others at a particular distance from the wall. Fix a nail on the bench at the end which touches the wall. Place a mirror vertically behind the nail fixed on the bench. Mark A, B at equal intervals at one of the benches placed away from the wall.. Similarly mark C, D on the other bench. At the end of the bench perpendicular to the wall, mark X as shown in the figure. Make four children sit on the bench at position A, B, C and D. Wrap a thread around the nail and give the two ends of it to the children in positions A and D. Similarly, wrap another thread around the nail and give the ends to the children in positions B and C.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 4
a. Light a torch on to the mirror through the thread held bv child A. Where does the reflected light fall?
Answer:
The reflected light falls on child D.

b. Similarly, let child D also light the torch on the mirror. Where does the reflected light fall?
Answer:
The reflected light falls on child A.

c. Let the children B and C repeat the activity. Write down your observations.
Answer:
When the torch is lit through the thread held by child B, the reflected light falls on child C. Similarly, when the torch is lit through the thread held by child C, the reflected light falls on child B.

d. Where will the reflected light fall, if the torch is lighted on to the mirror from X?
Answer:
The reflected light will fall on X.

Class 7 Basic Science Chapter 4 Intext Question and Answers

Question 1.
Why did grandma ask the girl to close the curtain when light entered the room through the window?
Answer:
The curtain does not allow the light to enter into the room.

Question 2.
What are the things that can be used instead of a curtain to prevent sunlight from entering a room through a glass window? List them.
Answer:

  • use wooden screens
  • use rubber screens
  • use plastic curtains
  • paint it black
  • use suitable papers to cover glass

Experiment – to find substances that transmit light and substances that do not transmit light Point a lighted torch at different objects such as scratched glass sheet, glass filled with pure water, wooden block, a piece of cloth, white paper, black chart paper, butter paper, window glass, a coin, a mirror, a piece of reading glass, marble, polythene cover and a colourless plastic bottle.

Question 3.
What do you observe?
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 5
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 6

Question 4.
Didn’t light pass through the butter paper? What about the glass used in spectacles? Do both of these substances transmit light in the same manner? Record it.
Answer:
Yes, some amount of light passed through the butter paper.
Light also passes through the glass used in spectacles.
No, both these substances do not transmit light in the same manner. Butter paper transmits light partially, whereas glass used in spectacles transmits light completely.
Repeat the experiment using butter paper, window glass, scratched glass piece, oiled paper, glass piece, polythene cover,’pure water taken in a glass tumbler and colourless plastic bottle.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 5.
On the basis of the experiment, classify them as those which transmit light completely and those which transmit light partially.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 7
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 8

Question 6.
Repeat the experiment using more objects. Classify them as transparent, translucent and opaque objects and record them in the Science Diary.
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 9

Question 7.
Can you change a transparent glass sheet into a translucent or opaque one? How? Discuss. What methods can you suggest? Record them in the Science Diary.
Answer:
Yes, we can.
To make it transparent – cover it with opaque objects, paint or soot.
To make it translucent – add oil, soot lightly or paint lightly.
Make a transparent glass sheet sooted, as shown in the figure below.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 10

Question 8.
What change do you observe?
Answer:
A sheet of transparent glass turns less clear when it accumulates soot on it. Depending on how thick the soot deposit is, glass can go from transparent to translucent or even opaque.

Question 9.
What happens to the light transmitting property of transparent glass sheet when it becomes sootier? Do an experiment to find it out.
Answer:
The below given is an experiment to find out what happens to the light transmitting properties of transparent glass sheet when it becomes sootier:
Materials Required:

  • A transparent sheet of glass
  • A candle or a soot producing material
  • Source of light (flashlight or torch)

Procedure:

  • Measure the initial amount of light going through the clean, transparent glass sheet by passing light through it.
  • To apply a tiny layer of soot to one side of the glass sheet, hold it over a candle flame or a burning piece of paper. Make sure everything is covered equally.
  • Now, pass the light through the sooted glass sheet.
  • Compare the light intensity before and after sooting the glass sheet.

Observation:
After applying the soot, a noticeable decrease in the amount of light that is travelling through the glass sheet can be observed.

Question 10.
What other methods can be adopted to make the glass sheet translucent or opaque? Write down your suggestions in the Science Diary.
Answer:
Methods to make glass translucent
1) Frosted Film Application: Glass can be made translucent by applying a frosted plastic film to it.
2) Using Frosted Spray Paint: To give glass a translucent appearance, mist it with frosted glass paint.

Methods to make glass opaque
1) Painting: Light will be blocked if an opaque paint or coating is applied to the glass’s surface.
2) Covering with Opaque Material: We can make the glass opaque by sticking opaque plastic or vinyl sheets to it.

Question 11.
You have found that pure water is transparent. What about air?
Answer:
Visible light can usually pass through pure air. However, air can have dust, water droplets, or pollutants in it that can scatter light and make it look less transparent (for example, when it’s foggy or smoggy).

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 12.
Can we convert pure water and air to translucent? Design an experiment for this.
Answer:
Yes, we can convert pure water and air to translucent.
To convert pure water to translucent
Fill 3/4 of a plastic bottle with water. Point light from a torch to it. Light passes through water. Add a few drops of blue ink to the water. Repeat the experiment. Now light will transmit through it partially.

To convert air to translucent
Take a transparent glass bottle. Point a lighted torch to it and observe. Light will transmit through it. Now, fill some smoke in the bottle using burning incense sticks. Again, repeat the experiment. Now the light will transmit through it partially.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 11

Question 13.
What other substances can you use for this? Design an experiment using the materials you have identified. Record the details and findings of the experiment in your Science Diary.
Answer:
To make water translucent ujala, liquid blue, ink, etc can be used. The presence of dust particles and mist in air make air translucent. Experiment to make water translucent: Fill a plastic bottle with water. Point light from a torch to it. Light passes through water. Add a few drops ujala or liquid blue or ink to the water. Repeat the experiment. Now light will transmit through it partially.

Experiment to make air translucent: Take a transparent glass bottle. Point a lighted torch to it and observe. Light will transmit through it. Now, fill some dust particles or mist in the bottle. Again, repeat the experiment. Now the light will transmit through it partially.

Question 14.
Haven’t you understood that some transparent substances can be converted to opaque substances?
Answer:
Yes

Question 15.
How does the opacity and transparency of objects benefit us?
Answer:
The opacity and transparency of objects benefit us by allowing us to control light and visibility. For ..example, transparent windows let light in, while opaque walls provide privacy.

Question 16.
How do you know when the ink in a refill pen is completely used up?
Answer:
The ink in a refill pen is completely used up when the pen no longer writes, and you can often see that the refill pen is empty if the pen has a transparent or translucent casing.

Question 17.
Don’t you use oil paper to trace pictures and maps?
Answer:
Yes, oil paper (tracing paper) is commonly used to trace pictures and maps because its translucency helps you to see the image beneath clearly.

Question 18.
Haven’t you realised that we utilise the transparency, opacity and translucency of objects in everyday life?
Answer:
Yes, we utilise the transparency, opacity and translucency of objects in everyday life. For example, using clear glass for windows, opaque materials for walls, etc.

Question 19.
Find out more situations through group discussion and present them in the class.
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 12
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 13

Question 20.
Can you write a science fiction with a transparent man or any other organism as a character?
Answer:
Hints

  •  Explain where the transparent character came from. .
  • Describe the character’s first response to their transparency.
  • Describe how the transparent character was received by society.
  • Describe a major conflict with the character’s transparency. Medical complications or privacy issues may be involved.
  • Draw attention to the particular difficulties the transparent character encounters.
  • Include some action sequences.
  • Choose a climax that highlights whether the character maintains their transparency or manages to reverse it.

Question 21.
What happens when light falls on opaque objects?
Answer:
When light falls on opaque objects, it cannot pass through them. It gets reflected back.

Activity
Dim the light in your class room by closing the doors and windows. Hold a mirror facing the wall and let the light from a torch fall on it.

Question 22.
What happens to the light?
Answer:
The light rays fall on the wall after hitting on the mirror.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 23.
Haven’t you noticed that the light rays fall on the wall after hitting on the mirror?
Answer:
Yes

Question 24.
Repeat the experiment by holding the following objects against the wall and allowing light from the torch to fall on each of them.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 14
Materials required: smooth tile, new steel plate, bronze, hardboard, paper, wooden block. Record your observations in the table given below.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 15
Answer:

The object on which light fell Difference in the returning of light after falling on the surface
Mirror Light returns well
Paper Very little light returns
Wooden block Light does not return
Hard board Light does not return
New steel plate Light returns well
Smooth tile Light returns well

Question 25.
Touch and feel the surfaces of the objects which reflect light very well. What do you feel?
Answer:
We feel that it is very smooth.

Question 26.
What about the surfaces of objects that do not reflect light much?
Answer:
We feel that it is very rough.

Question 27.
Haven’t you found that smooth surfaces reflect light very well and that it is less in the case of rough surfaces?
Answer:
Yes

Question 28.
Why is it that rough surfaces cannot reflect light well?
Answer:
Rough surfaces cannot scatter light well because they scatter light in different directions. (There are irregularities on a rough surface which makes it difficult for the light rays to get reflected in the same direction.) The reflection of light from a mirror and a sand paper are depicted below.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 16

Question 29.
Analyse the figures and write the inferences.
Answer:
Inference – The light falling on the mirror reflects regularly whereas the light falling on the sand paper reflects irregularly.

Question 30.
Doesn’t the light that fall on the mirror undergo a regular reflection?
Answer:
Yes

Question 31.
What about the light falling on the sandpaper?
Answer:
It undergoes diffused reflection.
Activity – To observe the regular reflection of light
Arrange a comb, a torch, a mirror and a sheet of A4 size paper as shown in the figure below and light the torch.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 17
Observation – The regular reflection of light can be observed.
Regular Reflection
Light falling on smooth surfaces reflects with regularity. This is regular reflection. Mirrors give a regular reflection.
Diffused Reflection
When light falls on rough surfaces, it gets scattered in different directions. This is irregular reflection or diffused reflection.
Activity
Kick a ball to a particular point on a wall from different places.

Question 32.
Doesn’t the ball hit the wall and bounce back?
Answer:
Yes, the ball hits the wall and bounces back.

Question 33.
Does it always bounce back in the same manner?
Answer:
No

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 34.
Similarly, are there any peculiarities in the light rays falling on and bouncing off a mirror?
Answer:
The light rays falling on and bouncing off a mirror always bounce back in the same manner.
The figure given below shows four children sitting at equal distances on two benches in front of a mirror. Listen to their conversation.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 18

Question 35.
Why is it that the child who is sitting first can’t see those sitting at the second and the third positions?
Answer:
This is because the way in which the light bounces back depends on the angle at which it hits the wall. So, the child can only see the image of people that are in line with the angle at which light reflects.

Question 36.
Similarly, why can’t the other children see all others through the mirror?
Answer:
The mirror reflects light according to the angle at which it hits its surface. So, the other children can’t see all others through it.

Question 37.
Measure the angle between the ray of light from the laser torch and the normal. Similarly Angle between the light ray from the torch and the normal Angle between the reflected light ray and the normal
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 19
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 20

Question 38.
Analyse the completed table. Is there any relation between the angle made by the light ray from the torch with the normal and the angle made by the reflecting light ray with the normal?
Answer:
The angle made by the light ray from the torch with the normal and the angle made by the reflecting light ray with the normal are equal.
Observe the diagram given below.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 21

  • The ray of light falling on the mirror is the incident ray.
  • The point at which the incident ray falls on the mirror is the point of incidence.
  • The line drawn perpendicular to the mirror at the point of incidence is the normal.
  • The light ray reflecting from the mirror is the reflected ray.

Angle of Incidence and Angle of Reflection
The angle between the incident ray and the normal is the angle of incidence. The angle between the reflected ray and the normal is the angle of reflection.

Question 39.
What did you find out regarding the reflection of light from the experiment you have conducted?
Answer:
From the experiment, we have found out that the angle at which light hits the mirror (the angle of incidence) is equal to the angle at which it reflects from the mirror (the angle of reflection).
Plane
• The two sheets of paper inserted into each other are on two planes.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 22
• Each wall in your classroom is a plane.

Laws of Reflection
• The angle of incidence and the angle of reflection are equal.
• The incident ray, the reflected ray and the normal at the point of incidence are on the same plane.

Question 40.
How does light reach the eye so that we see the book?
Answer:
Light from the bulb travels in all directions. Some of this light hits the book and reflects from its surface. Some of the reflected light enters the eye and we can see the book.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 41.
Observe the picture showing the path of the light ray from the bulb falling on the book and reflecting to our eyes. Complete the flow chart.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 23
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 24

Question 42.
Haven’t you understood that we see a book when the light falling on it gets reflected and reaches our eyes?
Answer:
Yes

Question 43.
How Do We See Things?
Answer:
We see an object when light coming from any source of light falls on that object, gets reflected and reaches our eyes. But we see a source of light when the light from it reaches our eyes directly.

Question 44.
Don’t we see many beautiful sights every day? How are these sights possible?
Answer:
Yes. When sunlight or the light from sources like bulbs and lamps falls on these beautiful objects, it gets reflected and reaches our. eyes. This is how we can see them.

Question 45.
Haven’t you understood that we see all sights on Earth due to the reflection of light?
Answer:
Yes

Question 46.
Why can’t we see our own face?
Answer:
We see objects when the reflected light reaches our eyes. The light falling on our face will not get reflected to our face. So, we can’t see our face.

Question 47.
We see objects when the reflected light reaches our eyes. Will the light falling on our face get reflected to our eyes?
Answer:
No

Question 48.
What is the device we use to see our face?
Answer:
A plane mirror

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 49.
What are the different surfaces from which light gets reflected and reaches our eyes while seeing our face in the mirror?
Answer:
Our face and the mirror

Question 50.
Observe the figure and identify the path of light. Complete the flow chart and record it in the Science Diary.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 25
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 26

Question 51.
On which surfaces other than the mirror, can you see your face?
Answer:

  • Smooth steel plate
  • Clear water
  • Smooth surfaces

Look at the picture below.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 27

Question 52.
Haven’t you seen mirrors of different shapes? What are the peculiarities of the surfaces of these mirrors?
Answer:
Yes
The surfaces of these mirrors have different shapes.
1) Circular
2) Rectangular
3) Oval

Plane Mirror
A mirror with a flat surface is a plane mirror. We can see our images in plane mirrors.

Question 53.
Which hand of the image is raised?
Answer:
Right hand.
Write down your name in English using capital letters on a white paper and show it in front of the plane mirror.

Question 54.
Can you read your name in the mirror?
Answer:
It is difficult to read.

Question 55.
If so, how should the word ‘BASIC SCIENCE’ be written on a paper so as to read it on a plane mirror?
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 28

Question 56.
Try to write down the names of your friends in such a way that you can read it correctly from a plane mirror.
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 29

Question 57.
On which side of the image will a mole on one’s left cheek be seen?
Answer:
Right side

Question 58.
What property of the image formed in the plane mirror can be understood here?
Answer:
Lateral inversion

Lateral inversion
In a plane mirror, the left side of an object appears as the right side of the image and the right side of the object appears as the left side of the image. This phenomenon is lateral inversion.

Question 59.
Haven’t you seen this vehicle? What would be the reason for writing like this on the vehicle? Discuss and record it in the Science Diary.
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 30
Yes.
In the front of the ambulance, the word “AMBULANCE” is written laterally inverted so that when another driver looks in their rearview mirror, the word will appear correctly, and this lets the driver give way for the ambulance.

Distance to the Image
Stand in front of a plane mirror.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 60.
At what distance is your image seen?
Answer:
The distance between the person and the mirror is the same as the distance between the image and the mirror.

Question 61.
Move a little forward and backward. Doesn’t the position of the image also change?
Answer:
Yes
If we take reflective glasses used in windows instead of plane mirror, we can measure the distance of an object from the mirror and the distance to the image from the mirror.

Question 62.
What will be the position of the image formed on the mirror?
Answer:
The position of the image of the candle formed on the mirror will also be at the area marked 3, where the coin is placed. (The distance between the object and the mirror will be the same as the distance between the image and the mirror.)
Repeat the experiment, by placing the candle at different positions. Move the coin to the positions where the images are seen.

Question 63.
Is there any relation between the distance to the object from the mirror and the distance to the image from the mirror?
Answer:
Distance of the object from the mirror and the distance of the image from the mirror are equal.

Question 64.
If you look at it from one side, don’t you see both the reflection and the candle on the other side at the same position?
Answer:
Yes

Question 65.
Observe the sizes of both. Compare the size of the object and the image by changing the position.
Answer:
The size of the object and the image remain the same.

Light up the candle on one side of the mirror. Measure the height of the candle upto the tip of the flame using a scale. Similarly, measure the height of the image on the other side with the help of # your friends. Repeat the experiment by changing the size of the candle.

Question 66.
Do the object and the image have the same size?
Answer:
Yes
Characteristics of Images in a Plane Mirror

  • The image undergoes lateral inversion.
  • In a plane mirror, the distance between the object and the mirror is equal to the distance between the image and the mirror.
  • In a plane mirror, the size of the object will be equal to the size of the image.

Question 67.
When a burning candle is placed in front of a plane mirror, we get only one image.How many images will you see if a burning candle is placed in between two parallel plane mirrors? What is your assumption?
Answer:
A large number of images can be seen.

Question 68.
How many images do you see on the mirror on the opposite side? Why do we see such a large number of images?
Answer:
We can see a large number of images. This is due to multiple reflection.
A large number of images of the lighted candle placed in between the parallel mirrors are formed due to multiple reflection of light.

Question 69.
The picture given depicts a situation involving multiple reflection in daily life. Find more examples.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 31
Answer:

  • Barber shop
  • Shopping malls
  • Jewelleries
  • Periscope
  • Kaleidoscope

Angle between the Mirrors and the Number of Images
Experiment
Glue two plane mirrors of equal size together with cellotape as shown in the above figure. Place a small ball in the middle and observe the number of images formed. Change the angles in between the mirrors.

Question 70.
Observe whether there is a change in the number of images formed.
Answer:
Yes, the number of images formed changes.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 32

Question 71.
Find out the angle between the mirrors and the number of images formed and complete the table.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 33
Answer:

Angle Number of images
30° 11
60° 5
90° 3
120° 2

Question 72.
Is there any relation between the angle between the mirrors and the number of images formed?
Answer:
Yes
If the angle is x, then the number of images is \(\frac{360}{x}\) – 1 .

Question 73.
What happens to the number of images when the angle between the mirrors increases?
Answer:
Decreases

Question 74.
What if the angle decreases?
Answer:
The number of images increases.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 75.
What do you see?
Answer:
A beautiful, symmetrical patterns of different colours and forms are visible when colourful beads are put inside a kaleidoscope. This pattern changes when the kaleidoscope is rotated.

2) Periscope
Activity – To make periscope
Materials required: A cardboard piece of size 25 cm × 30 cm, two plane mirror pieces of size 3 inch × 2.5 inch (Sunpack sheet can also be used instead of cardboard piece).

Method of construction
Stage 1: Cut a cardboard/sunpack sheet of size 25 cm × 30 cm.
Stage 2: Draw lines on it with the same measure as shown in the figure below.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 34
Stage 3: Cut off the unshaded parts of the figure along the lines. You will get a shape as shown in below figure.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 35
Stage 4: Fold this shape as shown and glue it up.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 36
Stage 5: Cut two pieces of plane mirrors of size 3 inch × 2.5 inch. While fixing them on the slanting ends of the device you have made, make sure that the reflecting surface faces the inner side of the device.

Question 76.
Isn’t it the upper view that we get when we look through the lower end of periscope? Why is it so?
Answer:
Yes. This is because of the mirrors inside the device that reflect light down from the top end to the bottom end.

Question 77.
By observing the path of light shown in the figure, will you be able to explain how this view is possible?
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 37
Yes. As light from the object strikes the top mirror, it is reflected downward. This light passes through the periscope tube. It is then reflected into your eye horizontally by the bottom mirror.

Question 78.
Discuss how a periscope is useful for the submarines in the Navy and for soldiers observing enemies from trenches in the battlefield.
Answer:
Submarines in the Navy
(a) It allows the crew to see the surface of water even when the submarine remains underwater.
(b) It helps to find enemy ships and other dangers.

For soldiers in trenches
(a) It helps soldiers observe the movements of enemies without exposing themselves.
(b) It also helps to find other dangers.

Question 79.
What if the periscope you have made is similar to the one as shown in the figure? The view from which part can be seen? Try to draw the path of light.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 38
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 39

Question 80.
Didn’t you notice how worried the owl is?
Answer:
Yes

Question 81.
When do owls go out for preying?
Answer:
At night

Question 82.
How does the intense light at night affect them?
Answer:
Owls are adapted to low light conditions. So, intense light at night can affect their ability to hunt and navigate.

Question 83.
Are the owls alone affected by the artificial light at night?
Answer:
No, many other animals are also affected.
Example – Bats, sea turtles, etc.
The use of light in excess in a non-judicious manner is referred to as light pollution.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 84.
Didn’t you realize some problems caused by light pollution? Too much light at night causes many difficulties for human beings as well as animals. Discuss them in the class and record in the Science Diary.
Answer:

  1. In urban areas the illuminations at night cause people to miss many of the sky views.
  2. Intense light falling on the eyes may cause blindness.
  3. Intense light used by motor vehicles causes inconvenience to the drivers on the other head.
  4. Light at night is harmful to many organisms that prey in the dark.

When Light Reflects Class 7 Notes Extra Questions and Answers

Question 1.
Say whether transparency or opacity is utilized in the following situations.
a) Glass fish tanks are used in aquariums
b) Glass sheets are painted black
c) Curtains are used in hospitals
d) Glasses are used in spectacles.
Answer:
a) Transparency
b) Opacity
c) Opacity
d) Transparency

Question 2.
Classify those given below as transparent, translucent and opaque objects.
a) Window glass piece
b) Butter paper
c) Glass slab
d) Oiled paper
e) Wooden block
f) Metal plate
Answer:
Transparent objects – Glass slab, Window, Glass piece
Translucent objects- Butter paper, Oiled paper
Opaque objects -Wooden block, Metal plate

Question 3.
Identify in which of the following situations regular reflection and diffused reflection takes place.
a) Light from the headlights of vehicle falls on dusty air.
b) Torch light is pointed to misty air.
c) Image of trees seen in the stagnant water.
d) Image of the vehicle behind is seen in the rearview mirror of vehicles.
Answer:
a) Diffused reflection
b) Diffused reflection
c) Regular reflection
d) Regular reflection

Question 4.
Why does a rough surface cause diffused reflection?
Answer:
A rough surface causes diffused reflection because of the irregularities on the surface, which makes the light rays reflect in many different directions instead of in a single direction. It causes light to scatter and spread out.

  • A mirror with a flat surface is a plane mirror.
  • Lateral inversion means that the left side of an object in a plane mirror appears on the right side and vice versa.
  • Distance of object from mirror equals distance of the image from the mirror.
  • Size of object equals size of image.
  • An object placed between two parallel mirrors produce large number of images due to multiple reflection.
  • Kaleidoscope and Periscope are two devices that works on multiple reflection.
  • The use of light in excess in a non-judicious manner is referred to as light pollution.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 5.
The angle between two plane mirrors is 90°. How many images of a ball placed in front of it will be formed?
Answer:
n = \(\frac{360}{x}\) – 1
x = 90°
n = \(\frac{360}{90}\) = 1
n = 4 – 1 = 3

Question 6.
Does the light reflected from our face reach our eyes and what method do we use to see our own face?
Answer:
The light reflected from our face does not reach our eyes. We use mirrors to see our own face.

Question 7.
Suggest a precaution to be taken by people who are engaged in welding works. Why?
Answer:
They should wear safety glasses. Because the intense light produced during welding is harmful to the eyes.

Question 8.
a) Arrange the given objects as transparent, translucent and opaque.
Water, Butterpaper, glass, wood, stone
b) Explain what are transparent, translucent and opaque objects.
Answer:
a) Transparent: Water, glass.
Translucent: Butter paper
Opaque: Glass, Wood

b) Objects that transmit light very well are called transparent objects. Objects which transmit light partially are called translucent objects. Objects which do not transmit light are opaque objects.

Question 9.
a) Can you write an experiment to make water translucent?
b) Write an experiment to make air translucent.
c) Which of the following is not a transparent object?
(Piece of glass, A plastic bottle, paper)
Answer:
a) Fill 3/4 of a plastic bottle with water. Point light from a torch to it. Light passes through water. Add a few drops of blue ink into water. Repeat experiment. It can be observed that light transmits through it partially indicating that water has become translucent.
b) Take a transparent glass bottle. Point a lighted torch and observe. Light passes through it. Mix some smoke in the bottle by burning incense sticks. Again, repeat the experiment. It can be observed that light transmits partially through it.
c) Paper

Question 10.
a) Choose the wrong statements from the following and correct it ?
i. Glass sheet is a translucent object
ii. Light passes partially through an opaque object
iii. Mixing water with milk makes it translucent
b) Write one example each of situations making use of opacity and transparency of light in daily life.
Answer:
a) i and ii are the wrong statements
i. Corrected statement: Glass sheet is a transparent object
ii. Corrected statement :Light cannot passes through an opaque object
b) Glasses in spectacles make use of transparency Curtains make use of opacity

Question 11.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 40
(a) Identify the type of reflection represented by figure (i) and (ii).
(b) The reflection from a cardboard is an example of
(c) Explain each type of reflection.
Answer:
(a) (i) Regular reflection
(ii) Irregular reflection/ Diffused reflection
(b) Irregular reflection/Diffused reflection
(c) Light falling on smooth surfaces reflects with regularity. This is regular reflection. Mirrors give a regular reflection.
When light falls on rough surfaces, it gets scattered in different directions. This is irregular reflection or diffused reflection.

Question 12.
(a) Draw a diagram to represent reflection of light in a mirror.
(b) Explain the terms
(i) Incident ray
(ii) Point of incidence
(iii) Normal
(iv) Reflected ray
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 41
(b)
(i) The ray of light falling on the mirror is the incident ray.
(ii) The point at which the incident ray falls on the mirror is the point of incidence.
(iii) The line drawn perpendicular to the mirror at the point of incidence is the normal.
(iv) The light ray reflecting from the mirror is the reflected ray.

Question 13.
(a) Correct the flowchart which shows how we see a flower .
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 42
(b) Why can’t we see in a dark room?
Answer:
(a) Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 43
(b) We see an object when light coming from any source of light falls on that object, gets reflected and reaches our eyes. As there is no source of light in a dark room,light does not fall on an object and reflect,hence we cannot see the object.

Question 14.
(a) Complete the table given below.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 44
(b) What is the relation between angle of incidence and angle of reflection?
Answer:
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 45

Question 15.
Observe the figure given below
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 46
(a) Which are the types of reflection represented by each figure?
(b) Classify the following based on objects producing regular and irregular reflection (mirror, A new steel plate, cardboard, sandpaper)
(c) In which one- an new steel plate or an old steel plate can a person see his face clearly?Why is it so ?
Answer:
(a)
(i) Regular reflection
(ii) Irregular reflection
(b) Objects producing regular reflection-Mirror,A new steel plate
Objects producing irregular reflection- Cardboard,Sandpaper
(c) In a new steel plate because regular reflection takes place therein old steel plate due to its rough surface only a blurred image will be visible.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 16.
a) Is there any relation between the distance to the object and the distance to the image from a plane mirror? Design an experiment to prove this relation.
b) Write two peculiarities of the image formed in a plane mirror.
Answer:
a) The distance to the object and the distance to the image from a plane mirror is the same.
Fix a plane mirror vertically on a table using double-sided tape. Place a lighted candle at a certain distance from the plane mirror (say, 3 cm). Repeat the experiment by placing the candle at different positions (say, 4cm, 5cm, etc.,). Observe the position of the image from the mirror. We can observe that the distance to the object and the distance to the image from a plane mirror is the same.

b) Virtual and erect
The size of object and image is the same

Question 17.
Observe the picture.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 47
A. Identify and write the incident ray and reflected ray.
B. Write the measure of angle of reflection:
C. Write any three peculiarities of image formed by a plane mirror.
Answer:
A. AO is the incident ray
OB is the reflected ray

B. Angle of reflection ∠r = 40°
(Angle of incidence ∠i =Angle of reflection ∠r)

C. Virtual and erect
The size of object and image is the same
Image is Laterally inverted

Question 18.
Observe the picture. A child is looking at a mirror in a dark room.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 48
(A) What changes should be made in the settings to see the face of the child clearly?
(B) Explain how the child can see the image on changing the settings?
(C) Write any two peculiarities of the image that the child sees in the mirror.
Answer:
(A) The Lamp should be turned towards the child such that light falls on the child.
(B) The light from the lamp falls on the child and reflects and strikes the mirror. This creates an image of the child in the mirror.
(C) Virtual and erect The size of child and image is the same.

Question 19.
When appu raised his left hand it front of a plane mirror he observed that it appeared as right hand and when he raised the right hand it appeared as left hand .
(a) Is appu’s observation correct?
(b) What is this phenomenon known as ?
(c) Explain the phenomenon?
Answer:
(a) Yes
(b) Lateral inversion
(c) In a plane mirror, the left side of an object appears as the right side of the image and the right side of the object appears as the left side of the image. This phenomenon is lateral inversion.

Question 20.
Regular reflection in a plane mirror is shown below.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 49
(a) Find out the mistakes in it and redraw the correct figure.
(b) What is the angle of reflection if angle of incidence is 45°.
(c) State the law of reflection that helped you to calculate the angle of reflection.
Answer:
(a) Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 50
(b) Angle of incidence = Angle of reflection
Angle of reflection = 45°

(c) The angle of incidence and the angle of reflection are equal.

Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects

Question 21.
Rohith observed a number of images of him when he stood in between two parallel plane mirrors in washroom.
(a) Why did he observe many images in this case?
(b) Find out the number of images formed when the mirrors are arranged at an angle of 60°.
(c) What is the angle at which mirror is to be arranged so as to get 3 images?
Answer:
(a) Multiple reflection of light creates many images depending upon the angle between the mirrors. Here mirrors are arranged parallely, so the angle between them is 180°.Number of images formed in this case is infinity.

(b) n = \(\frac{360}{x}\) – 1
x = 60°
n = \(\frac{360}{60}\) – 1 = 5

(c) n = \(\frac{360}{x}\) – 1
n = 3
x = \(\frac{360}{n+1}\)
x = \(\frac{360}{4}\)
x = 90°

Question 21.
(a) Complete the given table

Angle Number of images
300 …..(A)………
1200 ……..(B)

Answer:
(a)

Angle Number of images
300 …..11………
1200 ……..2

(b) As the angle between mirrors increases, number of images decreases.

Question 23.
Raju while reading a comic book, saw a task to find the correct word.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 51
(a) How can he identify the correct word?
(b) Which of the following shows the wrong representation of image of the letters that appear in mirror when placed in front of a plane mirror.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 52
(c) Writing in front of an ambulance is shown below. Why is it written so ?
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 53
Answer:
(a) By placing the word in front of a plane mirror. Lateral inversion helps to identify the correct word.
(b) (iii) is wrong
(c) In the front of the ambulance, the word “AMBULANCE” is written laterally inverted so that when another driver looks in their rearview mirror, the word will appear correctly and this lets the driver to give way for the ambulance.

Question 24.
(A) Identify the devices shown in the figure.
Class 7 Basic Science Chapter 4 Question Answer Notes When Light Reflects Img 54
Answer:
(a) (i) Kaleidoscope (ii) Periscope
(b) Kaleidoscope is used to observe the beautiful patterns of objects like (pieces of bangle, papers) placed in it.
Periscope is useful for the submarines in the Navy and for soldiers observing enemies from trenches in the battle field.

(c) In submarines and tanks, a periscope is useful because it lets the crew see above the water or over obstacles while staying hidden and safe. The upper view is possible when viewed through the lower end of periscope due to reflection of light from the mirrors. The light falling at the first mirror at the upper part and gets reflected and reaches the second mirror at the lower part creating the view of the upper part.This helps them find their way, keep an eye on their surroundings, and find their goals without putting themselves in danger.

Question 25.
Raju and Rohith live in a populated city. They went to their terrace to watch the beautiful night sky. But were not able to enjoy a sky view as expected .Rohith told Raju that it was due to light pollution.
(a) Is Rohith right?
(b) What is light pollution?
(c) What are some of the problems caused by light pollution?
Answer:
(A) the is right
(B) The use of light in excess in a non-judicious manner is referred to as light pollution.
(C) Intense light falling on eye may cause problems in vision.
Light at night is harmful to many organisms that prey at night.
Intense light of motor vehicles causes hindrance to other drivers.

Question 26.
Match the following.

A B
Plane mirror Translucent object
Kaleidoscope Transparent object
Butterpaper Multiple reflection
Glass slab Lateral inversion

(b) Analyse the statements given below and correct the wrong statements.
i) Diffused reflection helps to get Sunlight inside rooms.
ii) Surfaces that reflect light irregularly are called mirrors.
iii) Objects that do not transmit light are called translucent objects.
iv) A plane mirror makes a larger image than object.
Answer:
(a)

A B
Plane mirror Lateral inversion
Kaleidoscope Multiple reflection
Butterpaper Translucent object
Glass slab Transparent object

(b)
i) Correct statement
ii) Surfaces which reflect light regularly are called mirrors.
iii) Objects that do not transmit light are called opaque objects.
iv) A plane mirror makes an image of same size of the object.

When Light Reflects Class 7 Notes

  • Transparent objects – Objects that transmit light very well. Examples: window glass, pure water taken in a glass tumbler
  • Translucent objects – Objects that transmit light partially. Examples: butter paper, polythene cover
  • Opaque objects – Objects that do not transmit light. Examples: wooden block, aluminium foil
  • Transparent or translucent objects can be made opaque by covering them with paint or soot.
  • Transparent objects can be made translucent by adding oil, sooting lightly or painting lightly.
  • Transparency and opacity of objects benefit us by allowing us to control light and visibility.
  • Oil paper (tracing paper) is commonly used to trace pictures and maps. .
  • Reflection of light – The returning of light when it strikes on an object.
  • Regular reflection – Light falling on smooth surfaces reflects with regularity.
  • Irregular reflection or diffused reflection – Light falling on rough surfaces gets scattered in different directions.
  • Incident ray – The ray of light falling on the mirror.
  • Point of incidence – The point at which the incident ray falls on the mirror.
  • Normal – The line drawn perpendicular to the mirror at the point of incidence.
  • Reflected ray – The light ray reflecting from the mirror.
  • Angle of incidence – The angle between the incident ray and the normal.
  • Angle of reflection – The angle between the reflected ray and the normal.

Laws of reflection

  • The angle of incidence and the angle of reflection are equal.
  • The incident ray, the reflected ray and the normal at the point of incidence are on the same plane.
  • Lateral inversion – In a plane mirror, the left side of an object appears as the right side of the
    image and the right side of the object appears as the left side of the image.

Characteristics of images in a plane mirror

  • The image undergoes lateral inversion.
  • In a plane mirror, the distance between the object and the mirror is equal to the distance between the image and the mirror.
  • In a plane mirror, the size of the object will be equal to the size of the image.

Multiple reflection

  • A large number of images of the lighted candle placed in between the parallel mirrors are formed due to multiple reflection of light.
  • If the angle is x, then the number of images is \(\frac{360}{1}\) – 1

बया हमारी चिड़िया रानी Summary in Malayalam Hindi Class 7

Reading SCERT Class 7 Hindi Solutions and बया हमारी चिड़िया रानी Baya Hamari Chidiya Rani Summary in Malayalam Hindi before the exam can save a lot of preparation time.

Baya Hamari Chidiya Rani Summary in Malayalam Hindi

बया हमारी चिड़िया रानी Summary in Hindi

Baya Hamari Chidiya Rani Summary in Hindi

महादेवी वर्मा की कविता “बया हमारी चिड़िया रानी” में एक प्यारी बया चिड़िया का वर्णन है जो बहुत मेहनती और समर्पित है। वह तिनके लाकर अपना सुंदर घोंसला बनाती है और उसे ऊँची डाली पर लटकाती है। फिर वह खेतों से दाना और नदियों से पानी लाकर अपने लिए भोजन और पानी का इंतजाम करती है। कवयित्री कहती हैं कि वे चिड़िया को कभी दूर नहीं जाने देंगी और उसे हमेशा दाना और ठंडा मीठा पानी देंगी। जब चिड़िया अंडे देगी और नन्हे बच्चे निकलेंगे, तब कवयित्री और उनके साथी उनकी देखभाल करेंगे। जब बच्चे बड़े होकर उड़ने लगेंगे, तब भी कवयित्री चिड़िया के साथ रहेंगी और उसे दिलासा देंगी कि वह अकेली नहीं है। यह कविता प्रकृति के प्रति प्रेम, देखभाल और स्नेह को सरल और सुंदर तरीके से व्यक्त करती है।

बया हमारी चिड़िया रानी Summary in Malayalam Hindi Class 7 1

Baya Hamari Chidiya Rani Summary in Malayalam

बया हमारी चिड़िया रानी Summary in Malayalam

മഹാദേവി വർമ്മയുടെ ‘ബായോ ഹമാരി ചിഡിയാ റാണി’ എന്ന കവിത വളരെ കഠിനാധ്വാനിയും അർപ്പണബോധവുമുള്ള മനോഹരമായ ഒരു ബയ പക്ഷിയെ വിവരിക്കുന്നു. അവൾ വൈക്കോൽ കൊണ്ടുവന്ന് മനോഹരമായ ഒരു കൂടുണ്ടാക്കി ഉയർന്ന ശാഖയിൽ തൂക്കിയിടുന്നു. എന്നിട്ട് അവർ പക്ഷിക്കായി ഭക്ഷണവും വെള്ളവും ക്രമീകരിച്ച് വയലുകളിൽ നിന്ന് ധാന്യങ്ങളും നദികളിൽ നിന്നുള്ള വെള്ളവും കൊണ്ടുവന്നു. താൻ ഒരിക്കലും പക്ഷിയെ പോകാൻ അനുവദിക്കില്ലെന്നും എപ്പോഴും ധാന്യവും തണുത്ത മധുരമുള്ള വെള്ളവും നൽകുമെന്നും കവയിത്രി പറയുന്നു. പക്ഷി മുട്ടയിട്ട് കുഞ്ഞുങ്ങൾ പുറത്തുവരുമ്പോൾ കവയിത്രിയും കൂട്ടരും അവയെ പരിപാലിക്കും. കുഞ്ഞുങ്ങൾ വളർന്ന് പറക്കാൻ തുടങ്ങുമ്പോഴും കവയിത്രി പക്ഷിയുടെ കൂടെ തന്നെ നിന്നുകൊണ്ട് അത് തനിച്ചല്ലെന്ന് ആശ്വസിപ്പിക്കും. ഈ കവിത പ്രകൃതിയോടുള്ള സ്നേഹവും കരുതലും വാത്സല്യവും ലളിതവും മനോഹരവുമായ രീതിയിൽ പ്രകടിപ്പിക്കുന്നു.

बया हमारी चिड़िया रानी कवि परिचय महादेवी वर्मा

‘आधुनिक युग की मीरा’ कही जाने वाली महादेवी वर्मा का जन्म उत्तर प्रदेश के फ़र्रूख़ाबाद में होली के दिन 1907 में हुआ था। उनकी आरंभिक शिक्षा उज्जैन में हुई और एम. ए. उन्होंने संस्कृत में प्रयाग विश्वविद्यालय से किया। बचपन से ही चित्रकला, संगीतकला और काव्यकला की ओर उन्मुख महादेवी विद्यार्थी जीवन से ही काव्य प्रतिष्ठा पाने लगी थीं। वह बाद के वर्षों में लंबे समय तक प्रयाग महिला विद्यापीठ की प्राचार्या रहीं। वह इलाहाबाद से प्रकाशित ‘चाँद’ मासिक पत्रिका की संपादिका थीं और प्रयाग में ‘साहित्यकार संसद’ नामक संस्था की स्थापना की थी।

उन्होंने कविताओं के साथ ही रेखाचित्र, संस्मरण, निबंध, डायरी आदि गद्य विधाओं में भी योगदान किया है। ‘नीहार’, ‘रश्मि’, ‘नीरजा’, ‘सांध्य गीत’, ‘यामा’, ‘दीपशिखा’, ‘साधिनी’, ‘प्रथम आयाम’, ‘सप्तपर्णा’, ‘अग्निरेखा’ उनके काव्य-संग्रह हैं। रेखाचित्रों का संकलन ‘अतीत के चलचित्र’ और ‘स्मृति की रेखाएँ’ में किया गया है। ‘शृंखला की कड़ियाँ’, ‘विवेचनात्मक गद्य’, ‘साहित्यकार की आस्था तथा अन्य निबंध’, ‘संकल्पिता’, ‘हिमालय’, ‘क्षणदा’ उनके निबंधों का संकलन है।

बया हमारी चिड़िया रानी Summary in Malayalam Hindi Class 7

‘ആധുനിക കാലഘട്ടത്തിലെ മീര’ എന്നറിയപ്പെടുന്ന മഹാദേവി വർമ്മ 1907 ലെ ഹോളി ദിനത്തിൽ ഉത്തർപ്രദേശിലെ ഫറൂഖാബാദിലാണ് ജനിച്ചത്. അദ്ദേഹത്തിന്റെ പ്രാഥമിക വിദ്യാഭ്യാസം ഉജ്ജയിനിൽ നടന്നു, അദ്ദേഹം എം.എ. പ്രയാഗ് യൂണിവേഴ്സിറ്റിയിൽ നിന്ന് സംസ്കൃതം ചെയ്തു. ചെറുപ്പം മുതലേ ചിത്രകലയിലും സംഗീതത്തിലും കവിതയിലും ചായ്വുണ്ടായിരുന്ന മഹാദേവി വിദ്യാർത്ഥി കാലഘട്ടത്തിൽ തന്നെ കാവ്യാത്മകമായ പ്രശസ്തി നേടിത്തുടങ്ങി. പിന്നീടുള്ള വർഷങ്ങളിൽ വളരെക്കാലം പ്രയാഗ മഹിളാ വിദ്യാപീഠത്തിന്റെ പ്രിൻസിപ്പലായി തുടർന്നു. അലഹബാദിൽ നിന്ന് പ്രസിദ്ധീകരിക്കുന്ന ‘ചന്ദ്’ മാസികയുടെ എഡിറ്ററായിരുന്ന അവർ പ്രയാഗിൽ ‘സാഹിത്യകർ സൻസദ്’ എന്ന പേരിൽ ഒരു സംഘടന സ്ഥാപിച്ചു.
കവിതകൾക്കൊപ്പം, സ്കെച്ചുകൾ, ഓർമ്മക്കുറിപ്പുകൾ, ഉപന്യാസങ്ങൾ, ഡയറിക്കുറിപ്പുകൾ തുടങ്ങിയ ഗദ്യ വിഭാഗങ്ങളിലും അദ്ദേഹം സംഭാവന നൽകിയിട്ടുണ്ട്. “നീഹാർ’, ‘രശ്മി’, “നീർജ’, ‘സന്ധ്യഗീത്’, ‘യമ’, ‘ദീപശിഖ’, ‘സാധിനി, പ്രഥം ആയം’, ‘സപ്തപർണ, “അഗ്നിരേഖ’ എന്നിവയാണ് അദ്ദേഹത്തിന്റെ കവിതാസമാഹാരങ്ങൾ. ‘അതിത് കേ ചലചിത്ര, ‘സ്മൃതി കി രേൻ’ എന്നീ ചിത്രങ്ങളിലാണ് സ്കെച്ചുകൾ സമാഹരിച്ചിരിക്കുന്നത്. ‘ശൃംഖ കി കടിയൻ’, ‘വിമർശന ഗദ്യം’, ‘സാഹിത്യത്തിന്റെ വിശ്വാസവും മറ്റ് ഉപന്യാസങ്ങളും’, ‘സങ്കല്പിത’, ‘ഹിമാലയം’, ‘ക്ഷണദ എന്നിവ അദ്ദേഹത്തിന്റെ ലേഖനങ്ങളുടെ സമാഹാരങ്ങളാണ്

बया हमारी चिड़िया रानी शब्दार्थ

  • बया – നെയ്ത്തുകാരൻ പക്ഷി/weaver bird
  • महल – കൊട്ടാരം/palace
  • डाल – ശാഖ/branch
  • लटकाना – തൂക്കിയിടാൻ/to hang
  • दाना – ധാന്യം/grain
  • पानी – വെള്ളം /Water
  • आँगन – മുറ്റം/Courtyard
  • अंडा सेना – മുട്ട വിരിയിക്കാൻ/to hatch the egg
  • नन्हा – ചെറിയ/Tiny
  • पर – ചിറകുകൾ/wings

बया हमारी चिड़िया रानी Questions and Answers Notes Class 7 Hindi Kerala Syllabus

Practicing with SCERT Kerala Syllabus 7th Standard Hindi Textbook Solutions Unit 3 Chapter 2 बया हमारी चिड़िया रानी Baya Hamari Chidiya Rani Questions and Answers Notes improves language skills.

Class 7 Hindi Baya Hamari Chidiya Rani Question Answer

Baya Hamari Chidiya Rani Question Answer Class 7

SCERT Class 7 Hindi Unit 3 Chapter 2 Question Answer Kerala Syllabus बया हमारी चिड़िया रानी

प्रश्न 1.
‘तिनके लाकर महल बनाती’ ‘घोंसले को ‘ महल क्यों कहा गया है?
‘വൈക്കോൽ കൊണ്ടുവന്ന് അവൾ പണി യുന്നു’ കൂടിനെ കൊട്ടാരം എന്ന് വിളിക്കു ന്നത് എന്തുകൊണ്ട്?
उत्तर:
घोंसले को महल इसलिए कहा गया है क्योंकि बया चिड़िया इसे बहुत मेहनत और प्यार से बनाती है। यह उसके और उसके बच्चों के लिए सुरक्षित और खास जगह होती है।

പക്ഷി ഒരുപാട് കഷ്ടപ്പെട്ട് സ്നേഹത്തോടെ പണിയുന്നതിനാൽ കൂട് കൊട്ടാരം എന്ന് വിളിക്കപ്പെട്ടു. അവൾക്കും അവളുടെ കുട്ടി കൾക്കും സുരക്ഷിതവും സവിശേഷവു മായ സ്ഥലമാണിത്.

प्रश्न 2.
बया के बच्चों की निगरानी हम बारी-बारी से करेंगे। इसका तात्पर्य क्या है?
ബയയുടെ മക്കളെ ഞങ്ങൾ മാറിമാറി നോക്കും. ഇത് എന്താണ് സൂചിപ്പിക്കുന്നത്?
उत्तर:
इसका मतलब है कि हम मिलकर बया चिड़िया के बच्चों की देखभाल करेंगे। हम बारी-बारी से उनकी सुरक्षा और जरूरतों का ध्यान
ഇതിനർത്ഥം ഞങ്ങൾ ഒരുമിച്ച് കുഞ്ഞു ങ്ങളെ പരിപാലിക്കും എന്നാണ്. അവരുടെ സുരക്ഷയും ആവശ്യങ്ങളും ഞങ്ങൾ മാറിമാറി നോക്കും.

बया हमारी चिड़िया रानी Questions and Answers Notes Class 7 Hindi Kerala Syllabus

प्रश्न 3.
‘पर निकलेंगे / उड़ जाएँगे’ – में किसकी सूचना है?
“ചിറക് വരും പറക്കും’ ഇത് എന്തിന്റെ സൂചന ആണ്?
उत्तर:
यह बया चिड़िया के बच्चों के बड़े होने और स्वतंत्र होने की सूचना है। जब उनके पंख निकल आएंगे, तब वे उड़ने लगेंगे और अपने जीवन की शुरुआत
ഇത് പക്ഷിക്കുഞ്ഞ് വളർന്ന് സ്വതന്ത്ര മാകുന്നതിന്റെ വാർത്തയാണ്. അവയുടെ ചിറകുകൾ ഉയർന്നുവരുമ്പോൾ, അവ പറക്കാൻ തുടങ്ങുകയും അവരുടെ ജീവിതം ആരംഭിക്കുകയും ചെയ്യും.

प्रश्न 4.
कविता से अपनी मनपसंद पंक्तियाँ चुनकर
കവിതയിൽ നിന്ന് ഇഷ്ടപ്പെട്ട വരികൾ തിരഞ്ഞെടുത്ത് എഴുതുക.
उत्तर:
तुझको दूर न जाने देंगे,
दानों से आँगन भर देंगे,
और हौज़ में भर देंगे हम-
मीठा-मीठा ठंडा पानी ।

प्रश्न 5.
निम्नलिखित आशायवाली पंक्तियाँ चुनें|
ഇനി പറയുന്ന ആശയങ്ങൾ വരുന്ന വരികൾ തിരഞ്ഞെടുത്ത് എഴുതുക :
चिड़िया दूर न जाए इसके लिए आँगन में दाना-पानी भर देंगे |
बच्चे बया बनकर उड़ जाएँ तो हम मादा चिड़िया के पास रहेंगे |

പക്ഷികൾ പോകാതിരിക്കാൻ മുറ്റത്ത് ധാന്യങ്ങളും വെള്ളവും നിറയ്ക്കും.
കുഞ്ഞുങ്ങൾ ബയ . പക്ഷിയായി പറന്നു പോകുമ്പോൾ ഞങ്ങൾ അമ്മ പക്ഷിയുടെ കൂടെ നിൽക്കും.
उत्तर:
चिड़िया दूर न जाए इसके लिए आँगन में
दाना-पानी भर देंगे |
तुझको दूर न जाने देंगे,
दानों से आँगन भर देंगे,
और हौज़ में भर देंगे हम-
मीठा-मीठा ठंडा पानी ।

बच्चे बया बनकर उड़ जाएँ तो हम मादा चिड़िया के पास रहेंगे |
फिर जब उनके पर निकलेंगे,
उड़ जाएँगे बया बनेंगे,
हम तब तेरे पास रहेंगे,
तू मत रोना चिड़िया रानी ।

प्रश्न 6.
सामान अर्थवाले शब्द कविता से चुनें, तालिका भरें |
കവിതയിൽ നിന്ന് സമാനമായ അർത്ഥമുള്ള വാക്കുകൾ തിരഞ്ഞെടുക്കുക, പട്ടിക പൂരി श्री.
बया हमारी चिड़िया रानी Questions and Answers Notes Class 7 Hindi Kerala Syllabus 1
उत्तर:-

हर पक्षी का अपने रहन सहन है|
ഓരോ പക്ഷിക്കും അതിന്റേതായ ജീവിത ശൈലിയുണ്ട്.
हर चिड़िया का अपना रहन सहन है |
जल जीवन का आधार है।
ജലമാണ് ജീവന്റെ അടിസ്ഥാനം.
पानी जीवन का आधार है।
पंख के बिना उड़ना असंभव है |
ചിറകില്ലാതെ പറക്കുക അസാധ്യമാണ്.
पर के बिना उड़ना असंभव है |
पेड़ की सबसे ऊँची टहनी पतली है।
മരത്തിന്റെ ഏറ്റവും ഉയരം കൂടിയ ശാഖ കനം കുറഞ്ഞതാണ്.
पेड़ की सबसे ऊँची डाली पतली है।

प्रश्न 7.
ये संकेत पढ़ें और ‘जीवों को जीने दो’ विषय पर टिप्पणी लिखें:
ഈ നിർദ്ദേശങ്ങൾ വായിച്ച് ജീവികൾ ജീവിക്കട്ടെ’ എന്ന വിഷയത്തിൽ ഒരു അഭി പ്രായം എഴുതുക:
चारा तलाशने के लिए प्राणियों का अपना तौर-तरीका है।
प्राणी अपने बच्चों की निगरानी खुद कर सकता है|
पंख निकलने पर उड़ जाना चिड़ियों की सहज वृत्ति है|
खतरे में मदद करें।
सूखे में पानी दें|

ഭക്ഷണം കണ്ടെത്തുന്നതിന് മൃഗങ്ങൾക്ക് അവരുടേതായ മാർഗമുണ്ട്.
ജീവിക്ക് സ്വന്തം കുട്ടികളെ പരിപാലി ക്കാൻ കഴിയും.
ചിറകു വിടരുമ്പോൾ പറന്നു പോകുക എന്നത് പക്ഷികളുടെ സഹജവാസനയാണ്.
അപകടത്തിൽ സഹായിക്കുക.
വരൾച്ച സമയത്ത് വെള്ളം കൊടുക്കുക.
उत्तर:
जीवों को जीने दो
प्रकृति में हर जीव का अपना खास तरीका होता है जिससे वह चारो तलाशता है और अपने लिए भोजन जुटाता है। प्राणी अपने बच्चों की देखभाल खुद ही कर सकते हैं और उन्हें सुरक्षित रख सकते हैं। चिड़ियों के पंख निकलने पर उनका उड़ जाना उनकी प्राकृतिक वृत्ति है, जिससे वे स्वतंत्र होकर जीवन जीने लगती हैं। हमें जीवों को खतरे में देखकर उनकी मदद करनी चाहिए और सूखे में उन्हें पानी देना चाहिए। इस तरह हम जीवों को जीने का मौका दे सकते हैं और उनके जीवन को सुरक्षित बना सकते हैं।

ജീവികൾ ജീവിക്കട്ടെ
പ്രകൃതിയിൽ, ഓരോ ജീവജാലത്തിനും അതി ന്റേതായ പ്രത്യേക മാർഗമുണ്ട്, അതിലൂടെ കാലിത്തീറ്റ തിരയുകയും സ്വയം ഭക്ഷണം ശേഖരിക്കുകയും ചെയ്യുന്നു.. മൃഗങ്ങൾക്ക് അവരുടെ കുഞ്ഞുങ്ങളെ പരിപാലിക്കാനും സുരക്ഷിതമായി സൂക്ഷിക്കാനും കഴിയും. പക്ഷികൾ ചിറകു മുളയ്ക്കുമ്പോൾ, പറന്നു പോകാനുള്ള സ്വാഭാവിക സഹജവാസനയാണ്, അതുമൂലം അവർ സ്വതന്ത്രമായ ജീവിതം നയിക്കാൻ തുടങ്ങുന്നു. ജീവജാലങ്ങൾ അപകടത്തിൽപ്പെടുമ്പോൾ അവരെ സഹാ യിക്കുകയും വരൾച്ചയിൽ വെള്ളം നൽകു കയും വേണം. ഇതുവഴി ജീവജാലങ്ങൾക്ക് ജീവിക്കാനും അവരുടെ ജീവിതം സുരക്ഷി തമാക്കാനും നമുക്ക് അവസരം നൽകാം.

बया हमारी चिड़िया रानी Questions and Answers Notes Class 7 Hindi Kerala Syllabus

प्रश्न 8.
यहाँ अंधा व्यक्ति सड़क पार करने की कोशिश
बया हमारी चिड़िया रानी Questions and Answers Notes Class 7 Hindi Kerala Syllabus 2

1. पहली तस्वीर में एक अंधा व्यक्ति सड़क पार करने की कोशिश कर रहा है। कोई उसकी मदद नहीं कर रहा |
ഒന്നാമത്തെ ചിത്രത്തിൽ അന്ധനായ ഒരു വ്യക്തി റോഡ് മുറിച്ചു കടക്കുവാൻ ശ്രമിക്കുന്നു. അദ്ധേഹത്തെ ആരും സഹായി ക്കുന്നില്ല.

2. दूसरी तस्वीर में एक लड़का और एक लड़की उनकी मदद के लिए आते हैं।
രണ്ടാമത്തെ ചിത്രത്തിൽ അദ്ധേഹത്തെ സഹായിക്കുവാൻ ഒരു ആൺകുട്ടിയും പെൺകുട്ടിയും വരുന്നു.

3. वे उसे सड़क पार करने में मदद करते हैं।
അവർ അദ്ധേഹത്തെ റോഡ് മുറിച്ചു കടക്കുവാൻ സഹായിക്കുന്നു.

4. वह उन बच्चों को उनकी मदद करने के लिए धन्यवाद देता है।
തന്നെ സഹായിച്ചതിന് ആ കുട്ടികളോട് നന്ദി പറയുന്നു.

प्रश्न 9.
‘बया हमारी चिड़िया रानी’ किसकी कविता है?
‘बया हमारी चिड़िया रानी’ ആരുടെ കവിതയാണ്?
उत्तर:
महादेवी वर्मा
മഹാദേവി വർമ്മ

प्रश्न 10.
यह किस पक्षी की घोसला है?
ഇത് ഏതു പക്ഷിയുടെ കൂടാണ്?
उत्तर:
यह बया पक्षी की घोसला है |
ഇതു ബയാ പക്ഷിയുടെ കൂടാണ്.

प्रश्न 11.
कविता में बया चिड़िया क्या करती है?
കവിതയിൽ ബയാ പക്ഷി എന്താണ് ചെയ്യുന്നത്?
उत्तर:
कविता में बया चिड़िया तिनके लाकर अपना महल बनाती है, खेतों से दाना लाती है, और नदियों से पानी भर लाती है।
കവിതയിൽ, പക്ഷി കൊണ്ടുവന്ന് കൊട്ടാരം പണിയുന്നു, വയലുകളിൽ നിന്ന് ധാന്യങ്ങൾ വൈക്കോൽ കൊണ്ടുവരുന്നു, നദികളിൽ നിന്ന് വെള്ളം കൊണ്ടുവരുന്നു.

प्रश्न 12.
कवयित्री बया चिड़िया से क्या वादा करती है?
കവയിത്രി പക്ഷിയോട് എന്ത് വാഗ്ദാന മാണ് നൽകുന്നത്?
उत्तर:
कवयित्री बया चिड़िया से वादा करती है कि वह उसे दूर नहीं जाने देंगी, आँगन में दाना भर देंगी और हौज़ में मीठा ठंडा पानी भर देंगी।
കിളിയെ പോകാൻ അനുവദിക്കില്ലെന്നും മുറ്റത്ത് ധാന്യം നിറയ്ക്കുമെന്നും കുളത്തിൽ മധുരവും തണുത്ത വെള്ളവും നിറയ്ക്കുമെന്നും കവയിത്രി പക്ഷിയോട് വാഗ്ദാനം ചെയ്യുന്നു.

बया हमारी चिड़िया रानी Questions and Answers Notes Class 7 Hindi Kerala Syllabus

प्रश्न 13.
बया चिड़िया के अंडे सेने पर क्या होता है?
പക്ഷിയുടെ മുട്ട വിരിയുമ്പോൾ എന്ത് സംഭവിക്കും?
उत्तर:
जब बया चिड़िया अंडे सेतेगी, नन्हे बच्चे निकलेंगे।
ബയാ പക്ഷി മുട്ടകൾ വിരിയിക്കുമ്പോൾ ചെറിയ കുഞ്ഞുങ്ങൾ പുറത്തുവരും.

प्रश्न 14.
बच्चों के पर निकलने पर क्या होगा?
കുഞ്ഞുങ്ങളുടെ തൂവലുകൾ പുറത്തു വരു മ്പോൾ എന്ത് സംഭവിക്കും?
उत्तर:
जब बच्चों के पर निकलेंगे, वे उड़ जाएँगे और बया बन जाएँगे |
കുഞ്ഞുങ്ങൾക്ക് ചിറകുകൾ വികസിക്കു മ്പോൾ അവ പറന്ന് ബയോ പക്ഷികളായി മാറും.

बारिश के बाद Questions and Answers Notes Class 7 Hindi Kerala Syllabus

Practicing with SCERT Kerala Syllabus 7th Standard Hindi Textbook Solutions Unit 3 Chapter 1 बारिश के बाद Baarish Ke Baad Questions and Answers Notes improves language skills.

Class 7 Hindi Baarish Ke Baad Question Answer

Baarish Ke Baad Question Answer Class 7

SCERT Class 7 Hindi Unit 3 Chapter 1 Question Answer Kerala Syllabus बारिश के बाद

बारिश के बाद Questions and Answers Notes Class 7 Hindi Kerala Syllabus 1

चित्र में क्या-क्या हैं ?
उत्तर :
चित्र में एक बहुत बड़ा पेड़ है। उस पेड़ पर एक चिडिया का घोंसला लटक रहा है। चित्र में एक झोंपड़ी है और उस झोंपड़ी के सामने एक स्त्री खड़ी है। उसकी हाथ में एक थाली है। झोंपडी के सामने एक तालाब है। उस तालाब में एक लड़की और एक लड़का है। तालाब पानी से भरा हुआ है। पानी में कई मछलियाँ होती है। वे दोनों मछली को एक तौलिये के सहारे पकड़ते हैं।

ചിത്രത്തിൽ ഒരു വലി. മരമുണ്ട്. ആ മരത്തിൽ ഒരു പക്ഷിക്കൂട് തൂങ്ങിക്കിടക്കുന്നു. ചിത്രത്തിൽ ഒരു കുടിൽ ഉണ്ട്, ആ കുടിലിനു മുന്നിൽ ഒരു സ്ത്രീ നിൽക്കുന്നു. അവരുടെ കൈയിൽ ഒരു പാത്രമുണ്ട്. കുടിലിനു മുന്നിൽ ഒരു കുളമുണ്ട്. കുളത്തിൽ ഒരു ആൺകുട്ടിയും പെൺകുട്ടിയും നിൽക്കുന്നു. കുളം വെള്ളം കൊണ്ട് നിറഞ്ഞതാണ്. വെള്ളത്തിൽ ധാരാളം മത്സ്യങ്ങളുണ്ട്. അവർ ഒരു ടവ്വലിന്റെ സഹായത്തോടെ മത്സ്യങ്ങളെ പിടിക്കുകയാണ്.

प्रश्न 1.
यहाँ चिडियों का ज़रूरी काम क्या होगा ?
ഇവിടെ പക്ഷികളുടെ പ്രധാന ജോലി എന്താ യിരിക്കും?
उत्तर :
वहाँ बारिश हो रही थी। जब बारिश रुकी तो सभी चिड़ियँ शोर मचाते हुए अपने भोजन की तलाश में जाने की तैयारी कर रहे थे।
അവിടെ മഴയായിരുന്നു. മഴ തോർന്നു നിൽക്കുന്ന സമയത്ത് പക്ഷികളെല്ലാം ബഹളമു ണ്ടാക്കി കൊണ്ട് അതിന്റെ ഭക്ഷണം തേടി പോകാനുള്ള തയ്യാറെടുപ്പിലായിരുന്നു.

प्रश्न 2.
उलटी बहती नाव के पीछे भागते बच्चों का मनोभाव क्या होगा ?
മറിഞ്ഞ വള്ളത്തിന് പിന്നാലെ ഓടുന്ന കുട്ടിക ളുടെ വികാരം എന്തായിരിക്കും?
उत्तर :
बच्चे नाव से गिरकर पानी में गिरे कीडों को बचाने की होड में थे।
വള്ളത്തിൽ നിന്ന് മിറഞ്ഞ് വെള്ളത്തിലേക്ക് വീഴുന്ന പ്രാണികളെ രക്ഷപ്പെടുത്താനുള്ള ഓട്ട പ്പാച്ചിലിലായിരുന്നു കുട്ടികൾ.

प्रश्न 3.
“ कीचड में सराबोर गुड्डू भी हँस रहा था और गुठली भी । ” – क्या ऐसा कोई मज़ेदार अनुभव आपके जीवन में हुआ है ? बताएँ ।
“ചെളിയിൽ മുങ്ങിയ ഗുഡ്ഡുവും ചിരിച്ചു കൊണ്ടിരുന്നു ഗുഡ്ലിയും.” നിങ്ങളുടെ ജീവി തത്തിലും ഇതുപോലെയുള്ള അനുഭവങ്ങൾ ഉണ്ടായിട്ടുണ്ടോ?
उत्तर :
हाँ, मेरा भी जीवन में ऐसा मज़ेदार अनुभव हुआ है । एक बार मैं और मेरी बहन बारिश में कागज़ की नाव तैराने गए, उसी समय मैं भी पानी में फिसलकर गिर गया। मैं भी कीचड़ से उसी समय भरा हुआ
ഉണ്ട്, എന്റെ ജീവിതത്തിലും ഇങ്ങനെയുള്ള രസകരമായ അനുഭവങ്ങൾ ഉണ്ടായിട്ടുണ്ട്. ഒരി ക്കൽ ഞാനും എന്റെ സഹോദരിയും കൂടെ മഴ വെള്ളത്തിൽ പേപ്പർ ബോട്ട് ഒഴുക്കാനായിട്ട് പോയി. അപ്പോൾ ഞാനും വെള്ളത്തിൽ തെന്നി വീണു. ഞാനും ചെളി കൊണ്ട് നിറഞ്ഞിരുന്നു.

बारिश के बाद Questions and Answers Notes Class 7 Hindi Kerala Syllabus

प्रश्न 4.
निम्नलिखित गद्यांश को पढ़कर नीचे दिए गए प्रश्नों को उत्तर दीजिए ।
താഴെ തന്നിരിക്കുന്ന ഗദ്യഭാഗം വായിച്ചിട്ട് തന്നിരിക്കുന്ന ചോദ്യങ്ങൾക്ക് ഉത്തരമെഴുതുക.
बारिश के बाद सभी कुछ धुला-धुला, नया- नया सा लगने लगा था । अमलतास के फूल गीली मिट्टी के कारण और अधिक पीले लग रहे थे। घास की नोंकों पर ठहरी पानी की बूँदें कभी भी फिसलने को थीं। चिडियों ने चिल्लपों मचा रखी थी ।
(i) किसको फूल अधिक पीले लग रहे थे ?
(गेंदा, अमलतास, गुलाब)
ഏതു പൂവാണ് അധികം മഞ്ഞയായി തോന്നുന്നത്?
(ജമന്തി കണിക്കൊന്ന റോസ്)

(ii) किसके बाद सभी कुछ धुला – नया सा लगने लगा था?
(बारिश, गर्मी, सर्दी)
ഏതിനു ശേഷമാണ് എല്ലാം കഴുകിയതും പുതിയതുമായി തോന്നുന്നത്?
(മഴ ചുട് തണുപ്പ്)

(iii) किसने चिल्लपों मचा रखी थी ?
(केंचुआ, मेंढक, चिडियाँ)
ആരാണ് ചിലച്ചു കൊണ്ടിരുന്നത്?
(മണ്ണിര, തവള, പക്ഷികൾ)
उत्तर :
i. अमलतास
ii. बारिश
iii. चिडियाँ

प्रश्न 5.
वो दोनों एक बरसाती नाले में खडे थे गुड्डू और गुठली के साथ जा बातचीत हुई, उसे लिखें ।
അവർ രണ്ടുപേരും മഴച്ചാലിൽ നിൽക്കുകയാ യിരുന്നു. ഗുഡ്ഡുവും ഗുഡ്ലിയും തമ്മിൽ നടന്ന സംഭാഷണം എഴുതാം.
उत्तर :
गुठली : गुड्डू, तुम क्या कर रहे हो?
ഗുഡ്ഡുലി : ഗുഡ്ഡു, നീ എന്താണ് ചെയ്യുന്നത്?

गुड्डू : मैं यहाँ पत्तों की नाव तैराने की कोशिश कर रहा हूँ।
ഗുഡ്ഡു : ഞാനിവിടെ ഇലകളുടെ ഒരു വള്ളം ഒഴു ക്കാൻ ശ്രമിക്കുന്നു.

गुठली : अच्छा, सवारियाँ कौन-कौन है ?
ഗുഡ്ഡുലി : ശരി, യാത്രക്കാർ ആരെല്ലാമാണ്?

गुड्डू : एक चींटा, कोसम के पेड पर रहने वाला एक लाल-काला कीडा और एक
ഗുഡ്ഡു : ഒരു ഉറുമ്പ്, കോസ വൃക്ഷത്തിൽ താമ സിക്കുന്ന ചുവപ്പും കറുപ്പുമുള്ള ഒരു പ്രാണി, പിന്നെ ഒരു മണ്ണിരയും.

गुठली : ठीक है, मैं भी शामिल हो जाऊँगा।
ഗുഡ്ഡുലി : ശരി, ഞാനും കൂടെ വരാം.

प्रश्न 6.
गुड्डू ने आवाज़ दी, “देख गुठली, गोकुल गैया !” – कौन है गोकुल गैया ?
ഗുഡ്ഡു ഉറക്കെ വിളിച്ചു പറഞ്ഞു, “നോക്കൂ ഗുഡ്ലി, ഗോകുൽ ഗയ്യ! ആരാണ് ഗോകുൽ
उत्तर :
गोकुल गैया सुंदर, मखमली लाल रंग की कीडी होती है। बारिश के मौसम में दिखती है। गुड्डू और गुठली इनको एक माचिस की डिब्बी में इकट्ठा करके स्कूल में दोस्तों को दिखाते थे।
ഗോകുൽ ഗയ്യ സുന്ദരമായ, തിളങ്ങുന്ന ചുവപ്പ് നിറത്തിലുള്ള കീടങ്ങളാണ്. മഴക്കാലത്താണ് ഇത് കാണപ്പെടുന്നത്. ഗുഡ്ഡുവും ഗുഡ്ലിയും ഇതിനെപ്പിടിച്ച് ഒരു തീപ്പെട്ടിക്കൂടിനുള്ളിലാക്കി സ്കൂളിൽ കൂട്ടുകാരെ കൊണ്ട് കാണിക്കുമായി രുന്നു.

प्रश्न 7.
पूरा कीजिए।
പൂരിപ്പിക്കുക.
1. गुड्डू और गुठली ________ थामे अपनी नाव को देख रहे थे।
ഗുഡ്ഡുവും ഗുഡ്ലിയും ________ അടക്കിപ്പിടി ച്ചുകൊണ്ട് അവരുടെ വള്ളത്തിലേക്ക നോക്കി.

2. हवा में ________ पानी की कुछ बूँदें गुठली के चेहरे से टकरा रही थी ।
വായുവിൽ ________ ഏതാനും വെള്ളത്തുള്ളി കൾ ഗുഡ്ലിയുടെ മുഖത്തേക്ക് പതിക്കുന്നു ണ്ടായിരുന്നു.

3. पानी उनके ________ छू रहा था।
വെള്ളം അവരുടെ ________ തൊട്ടിരുന്നു

4. गुठली ________ हो गई।
ഗുഡ്ലി ________

5. गुठली ने ________ से उसे उठाया और कोसम के पेड की पत्तियों पर छोड दिया।
ഗുഡ്ലി ആ പ്രാണിയെ ________ എടുത്ത് കോസ വൃക്ഷത്തിന്റെ ഇലകളിൽ വച്ചു.
उत्तर :
(1) साँस
(2) अटकी
(3) घुटने
(4) तरबतर
(5) आहिस्ता

प्रश्न 8.
नीचे दिए गए शब्दों से विशेषण शब्द चुनकर लिखिए |
(i) कमल नीला है । താമര നീലയാണ്.
(ii) आम मीठा है। മാമ്പഴം മധുരമുള്ളതാണ്.
(iii) भवन पुराना है। കെട്ടിടം പഴയതാണ്.
(iv) कुआँ गहरा है। കിണർ ആഴമുള്ളതാണ്.
(v) लड़का छोटा है। ആൺകുട്ടി ചെറുതാണ്.
(vi) साड़ी नारंगी है। സാരി ഓറഞ്ച് നിറമാണ്.
(vii) ऊँची पहाडी है। അതൊരു ഉയർന്ന കുന്നാണ്.
उत्तर :
(i) नीला
(ii) मीठा
(iii) पुराना
(iv) गहरा
(v) छोटा
(vi) नारंगी
(vii) ऊँची

I. कहानी के आधार पर सही (✓) या गलत (✗) का निशान लगाएँ:
കഥയെ അടിസ്ഥാനമാക്കി ശരിയോ തെറ്റോ എന്ന ചിഹ്നം ഇടുക.
बारिश के बाद Questions and Answers Notes Class 7 Hindi Kerala Syllabus 2
उत्तर :

क) बच्चे दोस्ती में मस्त रहते हैं।
കുട്ടികൾ സൗഹൃദം ആഘോഷിക്കുന്നു.
ख) बच्चे बारिश में खेलते हैं।
കുട്ടികൾ മഴയിൽ കളിക്കുന്നു.
ग) बच्चे कागज़ की नाव बनाते हैं ।
കുട്ടികൾ പേപ്പർ കൊണ്ടുള്ള ഉണ്ടാക്കുന്നു.
घ) पत्ते की नाव पलट जाती है।
ഇലകളുടെ വള്ളം വള്ളങ്ങൾ മറിഞ്ഞുപോയി.
ड़) गोकुल गाय बरसाती मौसम में दिखती
ചുവന്ന പ്രാണിയായ ഗോകുൽ ഗയ്യ മഴക്കാല ത്താണ് കാണുന്നത്.
च) कीचड़ में गिरने पर गुड्डू रोता है ।
ചെളിയിൽ വീണപ്പോൾ ഗുഡ്ഡു കരഞ്ഞു.

बारिश के बाद Questions and Answers Notes Class 7 Hindi Kerala Syllabus

II. पत्ते की नाव पलटने पर क्या हुआ ? जोड़कर लिखएं ।
ഇലകൾ കൊണ്ടുള്ള വള്ളം മറിഞ്ഞപ്പോൾ എന്ത് സംഭവിച്ചു? യോജിപ്പിച്ചെഴുതുക.

चींटा
ഉറുമ്പ്
पत्ते की नाव के नीचे दिखाई पड़ा।
ഇലകളുടെ വള്ളത്തിനടി യിൽ കാണപ്പെട്ടു.
लाल-काला कीडा
ചുവന്ന കറുത്ത പ്രാണി
पानी में तैरकर टहनी पर आ गया।
വെള്ളത്തിൽ നീന്തി GOO യിൽ വന്നിരുന്നു.
गुड्डू और गुठली
ഗുഡ്ഡുവും ഗുഡ്ലിയും
पानी के अंदर चला गया।
വെള്ളത്തിനുള്ളിലേക്ക്
केंचुआ
മണ്ണിര
उल्टी बहती नाव के पीछे भागे ।
തലകീഴായി മറിഞ്ഞ വള്ള ത്തിനു പുറകേ ഓടി.

उत्तर :
चींटा – पानी में तैरकर टहनी पर आ गया।
लाल-काला कीडा पत्ते की नाव के नीचे दिखाई पड़ा।
गुड्डू और गुठली उल्टी बहती नाव के पीछे भागे।
केंचुआ – पानी के अंदर चला गया।

III. बारिश के मौसम में गुड्डू और गुठली ने क्या-क्या किए? कहानी से चुनकर लिखें ।
മഴക്കാലത്ത് ഗുഡ്ഡുവും ഗുഡ്ലിയും എന്തെല്ലാം ചെയ്തു? കഥയിൽ നിന്ന് എടു ത്തെഴുതുക.
उत्तर :
वे दोनों पत्ते क नाव तैराने की कोशिश कर
അവർ രണ്ടുപേരും, ഇലകൾ കൊണ്ടുള്ള വള്ളം ഒഴുക്കാൻ ശ്രമിച്ചു.

गोकुल गैया को चाँदनी के पेड़ के नीचे ढूँढने लगा।
ഗോകുൽ ഗയ്യായെ നന്ത്യാർവട്ടത്തിന്റെ അടിയിൽ അന്വേഷിക്കാൻ തുടങ്ങി.

चाँदनी के पेड़ को ज़ोर से हिला दिया।
നന്ത്യാർവട്ടത്തിന്റെ മരം പിടിച്ച് ശക്തി യായി കുലുക്കി.

IV. ये शब्द पढ़ें। कहानी से इनकी विशेषता बतानेवाले शब्द चुनकर
ഈ വാക്കുകൾ വായിക്കാം. കഥയിൽ നിന്ന് ഇതിനെ വിശേഷിപ്പിക്കുന്ന വാക്കുകൾ എടുത്ത് എഴുതാം.

  • मिट्टी = മണ്ണ്
  • कीड़ा = പ്രാണി
  • नाव = വള്ളം
  • नाले = ചാല്
  • मेंढ़क = തവള
  • मुँह = വായ്

जैसे (ഉദാഹരണമായി)

  • मिट्टी = गीली मिट्टी
    മണ്ണ് = നനഞ്ഞ മണ്ണ്

उत्तर :
कीडा = लाल काला कीडा
പ്രാണി = ചുവന്ന കറുത്ത പ്രാണി

नाव = पत्ते की नाव
വള്ളം = ഇലകളുടെ വള്ളം

नाले = बरसाती नाले
ചാല് = മഴച്ചാല്

मेंढक = छोटा मेंढक
തവള = ചെറിയ തവള

मुँह = काला मुँह
വായ് = കറുത്ത വായ്

ഈ വാക്കുകൾ വായിച്ചതിൽ നിന്ന് എന്ത് മനസ്സിലാ ക്കാം. ഓരോ വാക്കുകളേയും ഇവിടെ മറ്റൊരു വാക്ക് കൊണ്ട് വിശേഷിപ്പിച്ചിരിക്കുകയാണ്. നാമ വിശേഷിപ്പിക്കുന്ന വാക്കുകളെയാണ് വിശേഷണം എന്ന് പറയുന്നത്.

जो शब्द संज्ञा की विशेषता बताते हैं, उसे विशेषण कहा जाता है। जिस शब्द की विशेषता बताते हैं, उसे विशेष्य कहलाते हैं ।
ഏതു വാക്കിനെയാണോ വിശേഷിപ്പിച്ചിരിക്കുന്നത് അതിനെ വിശേഷ്യം എന്ന് പറയുന്നു.

उदाहरण केलिए
ഉദാഹരണമായി

काला कौआ
കറുത്ത കാക്ക
ഇവിടെ കാക്കയെ വിശേഷിപ്പിച്ചിരിക്കുന്ന വാക്ക്

काला
അതിനാൽ അത് വിശേഷണം.
കറുത്ത് എന്ന വാക്കുകൊണ്ട് ആരെയാണോ വിശേ ഷിപ്പിച്ചിരിക്കുന്നത്, അത് विशेष्य ഇവിടെ कौआ കാക്കയാണ് विशेष्य.

കൂടുതൽ ഉദാഹരണങ്ങൾ നോക്കാം.

बहती नाव = ഒഴുകുന്ന വള്ളം
सुंदर गुठली = സുന്ദരിയായ ഗുഡ്ലി
मखमली कीडी = തിളങ്ങുന്ന പ്രാണി
पीले अमलतास = മഞ്ഞ കണിക്കൊന്ന

बारिश के बाद Questions and Answers Notes Class 7 Hindi Kerala Syllabus

V. डायरी लिखें।
ഡയറി എഴുതാം.

भागदौड में गुड्डू फिसला और जाकर कीचड में धम्म से गिर गया। घर आकर भी गुड्डू हँसता रहा। वह यादों में खो गया ……………. गुड्डू की डायरी लिखें।
ഓട്ടത്തിനിടയിൽ ഗുഡ്ഡു തെന്നി ചെളിയിൽ വീണു. വീട്ടിൽ വന്ന് ഗുഡ്ഡു ചിരിച്ചു കൊണ്ടി രുന്നു. അവൻ ഓർമ്മകളിൽ മുഴുകി ഇരുന്നു……….. ഗുഡ്ഡുവിന്റെ ഡയറി എഴുതാം.
उत्तर :
शनिवार
25.08.2023

आज का दिन बहुत खुशी का दिन था। बारिश का मौसम था। कितना सुहावना मौसम था ! बारिश के बाद का प्रकृति का दृश्य बहुत मनमोहक था। घास की नोकों पर ठहरी पानी की बूँदें कभी भी फिसलने को थीं। अमलतास के फूल गीली मिट्टी के कारण और अधिक पीले लग रहे थे। मेरा दोस्त गुठली चाँदनी के पेड़ के नीचे गोकुल गाय को ढूँढती थी। गोकुल गाय तो बारिश के अलावा और किसी मौसम में दिखती ही नहीं है। मैं चाँदनी के पेड़ को ज़ोर से हिला दिया। पेड़ की पत्तियों और फूलों पर ठहरा हुआ सारा पानी गुठली के ऊपर गिर गया। वह तरबतर हो गई। मैं भागता जा रहा था। गुठली मेरे पीछे कर रही थी । इसी भागदौड में, मैं फिसला और जाकर कीचड में धम्म-से गिर गया। कैसा मज़ा है? मैं हँस रहा था और

ശനിയാഴ്ച
25.08.2023

മെന്ന
ഇന്ന് വളരെ സന്തോഷകരമായ ദിവസമായിരു ന്നു. മഴക്കാലമായിരുന്നു. എത്ര മനോഹരമായ കാലാവസ്ഥയായിരുന്നു അത്! മഴ പെയ്തതിനു ശേഷമുള്ള പ്രകൃതി ദൃശ്യം വളരെ മനോഹരമാ യിരുന്നു. പുൽത്തകിടിയിൽ നിൽക്കുന്ന വെള്ള ത്തുള്ളികൾ ഏതു നിമിഷവും വഴുതി വീഴു അവസ്ഥയിലായിരുന്നു. നനഞ്ഞ മണ്ണ് കാരണം കണിക്കൊന്ന പൂക്കൾ കൂടുതൽ മഞ്ഞ നിറമായി കാണപ്പെട്ടു. എന്റെ സുഹൃത്ത് ഗുഡ്ലി നന്ത്യാർവട്ടത്തിന്റെ കീഴിൽ ഗോകുൽ ഗയ്യ എന്ന പ്രാണിയെ അന്വേഷിക്കുകയായിരു ന്നു. അത് മഴക്കാലത്തല്ലാതെ വേറൊരു കാലാ വസ്ഥയിലും കാണപ്പെടില്ലായിരുന്നു. ഞാൻ നന്ത്യാർവട്ടം പിടിച്ച് ശക്തമായി കുലുക്കി. മര ത്തിന്റെ ഇലകളിലും പൂക്കളിലും തങ്ങിനിന്ന വെള്ളമെല്ലാം ഗുഡ്ലിയുടെ മേൽ വീണു. അവൾ നനഞ്ഞു. ഞാൻ ഓടുകയായിരുന്നു. ഗുഡ്ലി എന്നെ പിന്തുടരുന്നുണ്ടായിരുന്നു ഓടു ന്നതിനിടയിൽ കാൽ വഴി ഞാൻ ചെളിയിൽ വീണു. എന്തൊരു രസമാണ്? ഞാൻ ചിരിക്കുക യായിരുന്നു, കൂടെ ഗുഡ്ലിയും.

बारिश के बाद Summary in Malayalam Hindi Class 7

Reading SCERT Class 7 Hindi Solutions and बारिश के बाद Baarish Ke Baad Summary in Malayalam Hindi before the exam can save a lot of preparation time.

Baarish Ke Baad Summary in Malayalam Hindi

बारिश के बाद Summary in Hindi

Baarish Ke Baad Summary in Hindi

श्रीमति कनक शशि द्वारा लिखी गयी एक सुंदर कहानी है ” बारिश के बाद” । यहाँ बारिश के बाद का चित्रण किया गया है। कहानी का प्रमुख कथापात्र है गुड्डू और गुठली । बारिश के बाद सभी कुछ धुला- धुला, नया-नया सा लगने लगा था। अमलतास के फूल गीली मिट्टी के कारण और अधिक पीले लग रहे थे। चिडियों ने चिल्लपों मचा रखी थी ।

गुड्डू और गुठली एक बरसाती नाले में खडे थे। पानी उनके घुटने छू रहा था। दोनों पत्ते की नाव तैराने की कोशिश कर रहे थे। नाव में कुछ सवारियाँ भी ज़बरदस्ती बैठाई गई थीं। एक चींटा, कोसम के पेड़ पर रहनेवाला एक लाल-काला कीड़ा और एक केंचुआ । गुड्डू ने एक मेंढक को बहुत कोशिश करके पकड़कर नाव में बिठा दिया। नाव पानी के साथ तेज़ी से बह रही थी । लेकिन थोड़ी दूर जाते ही मेंढक ने पानी में छलाँग लगा दी। उसकी छलाँग से नाव पलट गई।

बारिश के बाद Summary in Malayalam Hindi Class 7 1

चींटा पानी में तैरकर एक टहनी तरफ जाता दिखा। केंचुआ पानी के अंदर कहीं चला गया। नाव के नीचे से गुठली ने आहिस्ते से काला प्राणी को उठाया और कोसम के पेड़ की पत्तियों पर छोड़ दिया । इतने में गुड्डू ने गोकूल गैया को देखा। वह तो सुंदर, मखमली, लाल रंग की कीडी होती है। बारिश के मौसम में यह दिखती है। वे दोनों गोकुल गैया को एक माचिस की डिब्बी में इकट्ठा करके स्कूल में दोस्तों को दिखाते गुठली चाँदनी के पेड़ के नीचे खडे होकर गोकुल गैया को ढूँढते थे। गुड्डू ने वहाँ आकर उस पेड़ को ज़ोर से हिलाया। पेड़ की पत्तियों और फूलों पर ठहरा हुआ सारा पानी गुठली के ऊपर गिर गया। वह तरबतर हो गई। गुड्डू हँसकर भागता जा रहा था और गुठली चिल्लाकर पीछा कर रही थी। इसी भागदौड़ में गुड्डू फिसला और जाकर कीचड़ में धम्म से गिर गया। वे दोनों हँस रहा था।

Baarish Ke Baad Summary in Malayalam

बारिश के बाद Summary in Malayalam

ശ്രീമതി കനക ശശിയാൽ എഴുതപ്പെട്ട സുന്ദരമായ കഥയാണ് “മഴയ്ക്കു ശേഷം”. ഇവിടെ മഴയ്ക്ക് ശേഷ മുള്ള പ്രകൃതിയുടെ ചിത്രീകരണമാണ് നടത്തിയിരിക്കുന്നത്. കഥയിലെ പ്രധാന കഥാപാത്രങ്ങൾ ഗുഡ്ഡുവും, ഗുഡ്ലിയുമാണ്. മഴ കഴിഞ്ഞ് എല്ലാം കഴുകി പുതിയതായി കാണപ്പെടാൻ തുടങ്ങി. നനഞ്ഞ മണ്ണ് കാരണം താഴെ വീണു കിടക്കുന്ന കണിക്കൊന്ന പൂക്കൾ കൂടുതൽ മഞ്ഞ നിറമായിരിക്കുന്നു. കിളികൾ ചിലയ്ക്കാൻ തുടങ്ങിയിരിക്കുന്നു.

ഗുഡ്ഡുവും ഗുഡ്ലിയും മഴവെള്ളം വീണ് ചാലിൽ നിൽക്കുകയായിരുന്നു. വെള്ളം അവരുടെ കാൽമുട്ടിൽ തൊട്ടിരുന്നു. രണ്ടുപേരും ഇലകൾ കൊണ്ടുള്ള വളളം ഒഴുക്കാൻ ശ്രമിക്കുകയായിരുന്നു. വള്ളത്തിൽ ചില യാത്രക്കാർ ഇരിക്കാൻ നിർബന്ധിതരായിരുന്നു. ഒരു ഉറുമ്പ്, കോസ വൃക്ഷത്തിൽ താമസിക്കുന്ന ചുവപ്പും കറുപ്പും ഉള്ള ഒരു പ്രാണി, ഒരു മണ്ണിര, ഗുഡ്ഡു ഒരുപാട് പരിശ്രമിച്ച് ഒരു തവളയെക്കൂടി പിടിച്ച് വള്ളത്തിൽ ഇരുത്തി. വള്ളം വെളളത്തിനൊപ്പം അതിവേഗം ഒഴുകുകയായിരുന്നു. എന്നാൽ കുറച്ചു ദൂരം ചെന്നപ്പോ ഴേക്കും തവള വള്ളത്തിൽ നിന്നു എടുത്തുചാടി. അതിന്റെ ചാട്ടം കൊണ്ട് വള്ളം മറിഞ്ഞുപോയി. ഉറുമ്പ് വെള്ളത്തിൽ നീന്തി ഒരു കൊമ്പിലേക്ക് പോകുന്നത് കണ്ടു. മണ്ണിര നീന്തി വെള്ളത്തിലെവിടേയോ പോയി. വള്ളത്തിനടിയിൽ നിന്ന് ഗുഡി പതിയെ ആ കറുത്ത പ്രാണിയെ എടുത്ത് കോസ വൃക്ഷത്തിന്റെ ഇലയിൽ കൊണ്ടുവിട്ടു. ഇത്രയും ആയപ്പോഴേക്കും ഗുഡ്ഡു ഗോകുൽ ഗയ്യയെ കണ്ടു. അത് സുന്ദരമായ തിള ങ്ങുന്ന ചുവന്ന നിറത്തിലുള്ള ഒരു പ്രാണി ആണ്. മഴക്കാലത്താണ് ഇത് കാണപ്പെടുന്നത്. അവർ രണ്ടു പേരും ഈ പ്രാണിയെ പെറുക്കി എടുത്ത് ഒരു തീപ്പെട്ടി കൂട്ടിലാക്കി സ്കൂളിൽ കുട്ടികളെ കൊണ്ടു കാണി ക്കുമായിരുന്നു.

बारिश के बाद Summary in Malayalam Hindi Class 7 2

ഗുഡ്ലി നന്ത്യാർവട്ടത്തിന്റെ കീഴിൽ നിന്ന് ഗോകുൽ ഗയ്യയെ അന്വേഷിക്കുകയായിരുന്നു. ഗുഡ്ഡു അവിടെ വന്ന് നന്ത്യാർവട്ടത്തിന്റെ മരം പിടിച്ച് ശക്തമായി കുലുക്കി. മരത്തിന്റെ ഇലകളിലും പൂക്കളിലും തങ്ങി നിന്നി രുന്ന വെള്ളമെല്ലാം ഗുഡ്ലിയുടെ മുകളിൽ വീണു. അവൾ നന്നായി നനഞ്ഞു. ഗുഡ്ഡു ചിരിച്ചുകൊണ്ട് ഓടി. അതിനു പുറകെ നിലവിളിച്ചുകൊണ്ട് ഗുഡ്ലിയും ഈ ഓട്ടത്തിൽ ഗുഡ്ഡു തെന്നി ചെളിയിൽ വീണു. രണ്ടു പേരും ചിരിച്ചുകൊണ്ടിരുന്നു.

Baarish Ke Baad Translation in Malayalam

മഴ കഴിഞ്ഞ് എല്ലാം കഴുകി പുതിയതായി കാണാൻ തുടങ്ങി. നനഞ്ഞ മണ്ണ് കാരണം താഴെ വീണു കിടക്കുന്ന കണിക്കൊന്ന പൂക്കൾ കൂടുതൽ മഞ്ഞനിറമായിരിക്കുന്നു. പുൽത്തകിടിയിൽ തങ്ങി നിൽക്കുന്ന വെള്ളത്തുള്ളികൾ ഏതുനിമിഷവും വീഴുമെന്ന നിലയിലായിരുന്നു. അടുത്ത മഴ തുടങ്ങും മുൻപ് പക്ഷികൾ വലിയ ബഹളമുണ്ടാക്കി ആർപ്പ് വിളിച്ചു. വായു വിൽ തങ്ങി നിന്ന ഏതാനും വെള്ളത്തു ളളികൾ ഗുഡ്ലിയുടെ മുഖത്തേക്ക് പതിക്കുന്നുണ്ടായിരുന്നു. ഗുഡ്ലി തന്റെ സുഹൃത്തായ ഗുഡ്ഡുവിനൊപ്പം ചില പ്രധാന ജോലികളുടെ തിരക്കിലായിരു മഴയുള്ള ദിവസം മഴച്ചാലിൽ നിൽക്കു കയായിരുന്നു ഇരുവരും.

बारिश के बाद Summary in Malayalam Hindi Class 7 3

വെള്ളം അവരുടെ കാൽമുട്ടിൽ തൊട്ടിരുന്നു. ഇരുവരും ഇലകൾ കൊണ്ടുള്ള വള്ളം ഒഴുക്കാൻ ശ്രമിക്കുകയായിരുന്നു. ചില യാത്രക്കാർ വള്ളത്തിൽ ഇരിക്കാനും നിർബന്ധിതരായി. ഒരു ഉറുമ്പ്, കോസം മരത്തിൽ ജീവിക്കുന്ന ഒരു ചുവന്ന കറുത്ത പ്രാണി, ഒരു മണ്ണിര, മൂന്നു യാത്രക്കാർ ഇതിനകം കയറിക്കഴിഞ്ഞിരുന്നു. അപ്പോൾ ഗു ഒരു ചെറിയ തവളയെ കണ്ടു. അതിനെയും വെള്ളത്തിൽ കയറ്റണമെന്ന് അവൻ തീരുമാനിച്ചു. എന്നാൽ തവളയെ പിടിക്കുന്നത് എളുപ്പമായിരുന്നില്ല. ഗുഡ്ഡു വീണ്ടും വീണ്ടും ശ്രമിച്ചു. തവളെ പിന്നെയും പിന്നെയും ചാടും. ഗുഡ്ഡു ഇങ്ങനെ ചാടുന്നത് കണ്ട് ഗുഡ്ലി ചിരിച്ചു. ഒരുവിധം തവള ഗുഡ്ഡുവിന്റെ കൈപ്പത്തിയിൽ കയറി. ഗു ഗുഡ്ലിയോട് പറഞ്ഞു, “നോക്കൂ, ഞാൻ ഇതിനെ വള്ളത്തിൽ വച്ചാൽ ഉടനെ തന്നെ നീ വള്ളം വിട ണം. ഗുഡ്ലി ചിരിച്ചുകൊണ്ട് തലയാട്ടി. ഗു “ഒന്ന്, രണ്ട്, മൂന്ന്, …..’ എന്നിങ്ങനെ എണ്ണി തവ ളയെ വള്ളത്തിൽ ഇരുത്തി. വള്ളം വെള്ളത്തി നൊപ്പം അതിവേഗം ഒഴുകുകയായിരുന്നു. എന്നാൽ കുറച്ചു ദൂരം പോയപ്പോൾ ഒരു യാത് ക്കാരൻ വെള്ളത്തിലേക്ക് എടുത്തുചാടി. അതിന്റെ ചാട്ടം കൊണ്ട് വള്ളം ചാഞ്ചാടി മറിഞ്ഞു.

ഗുഡ്ഡുവും ഗുഡ്ലിയും ശ്വാസമടക്കിപ്പിടിച്ചു അവ രുടെ വള്ളത്തിലേക്ക് നോക്കി. യാത്രക്കാർക്ക് എന്ത് സംഭവിക്കുമെന്ന് അറിയില്ല. അപ്പോൾ ഉറുമ്പ് വെള്ളത്തിൽ നീന്തി ഒരു കൊമ്പിലേക്ക് പോകു ന്നത് കണ്ടു. മണ്ണിര നീന്തി വെള്ളത്തിനടിയിലെവി പോയി. കോസ് വൃക്ഷത്തിലെ ചുവന്ന കറുത്ത പ്രാണിയെപ്പറ്റി ഒരു വിവരവുമില്ല. തല കീഴായി പൊങ്ങിക്കിടക്കുന്ന വള്ളത്തിനു പിന്നാലെ ഗുഡ്ഡുവും ഗുഡ്ലിയും ഓടി. അപ്പോൾ വള്ള ത്തിന് അടിയിൽ നിന്ന് പ്രാണിയുടെ കറുത്ത വായ പ്രത്യക്ഷപ്പെട്ടു. ഗുഡ്ലി ആ പ്രാണിയെ പതിയെ എടുത്ത് കോസ് വൃക്ഷത്തിന്റെ ഇലകളിൽ വെച്ചു.

बारिश के बाद Summary in Malayalam Hindi Class 7 4

ഗുഡ്ഡു വിളിച്ചപ്പോൾ ഗുഡ്ലി പ്രാണി പോകുന്നത് നോക്കി നിൽക്കുകയായിരുന്നു. “നോക്കൂ ഗുഡ്ലി, ഗോകുൽ ഗയ്യ!” എത്ര സുന്ദരമായ, തിളക്കമുള്ള, ചുവന്ന നിറത്തിലുള്ള പ്രാണിയാണ് ഗോകുൽ ഗയ്യ. മഴയല്ലാതെ മറ്റൊരു സീസണിലും ഇത് കാണാനാകില്ല. ഗുഡ്ഡുവും, ഗുഡ്ലിയും ഗോകുൽ ഗയ്യകളെ ഒരു തീപ്പെട്ടി കൂടിൽ പെറുക്കി വച്ച് സ്കൂളിലെ കൂട്ടുകാരെ കാണിക്കുമായിരുന്നു. ഇതെല്ലാം ആലോചിച്ച് ഗുഡ്ലി വേഗം ഓടി. ഗു നന്ത്യാർവട്ടത്തിനടിയിൽ നിൽക്കുകയായിരുന്നു. ഗുഡ്ലി നന്ത്യാർവട്ടത്തിനടിയിൽ ചെന്ന് ഗോകുൽ ഗയ്യയെ തിരയുകയായിരുന്നു. അപ്പോൾ ഗു നന്ത്യാർവട്ടത്തിന്റെ മരം പിടിച്ച് ശക്തമായി കുലു ക്കി. മരത്തിന്റെ ഇലകളിലും പൂക്കളിലും തങ്ങി നിന്നിരുന്ന വെള്ളമെല്ലാം ഗുഡ്ലിയുടെ മുകളിൽ വീണു. അവൾ നന്നായി നനഞ്ഞു. ഗു ചിരിച്ചുകൊണ്ട് ഓടി. ഗുഡ്ലി നിലവിളിച്ച് അവനെ പിന്തുടരുകയായിരുന്നു. ഈ ഓട്ടത്തിൽ ഗു തെന്നി ചെളിയിൽ വീണു. ഇപ്പോൾ ചെളിയിൽ മുങ്ങിയ ഗുഡ്ഡുവും ചിരിച്ചു കൊണ്ടിരുന്നു, കൂടെ ഗുഡ്ലിയും.

बारिश के बाद लेखक परिचय कनक शशि

कनक शशि हिन्दी साहित्य के बहुमुखी साहित्यकार है। उनका जन्म 24 फरवरी 1980 में मध्यप्रदेश में हुआ। वे लेखन के अलावा डिज़ाइनिंग और चित्र बनाने का काम भी करती हैं। कनक शशि को प्रकृति के बीच घूमना, टहनियाँ, पत्तियाँ, बीज और पंख इकट्ठा करना और यह सोचना पसंद है कि उनके भीतर क्या कहानियाँ हो सकती हैं। एक कलाकार, उन्होंने एमएस यूनिवर्सिटी वड़ोदरा में पेंटिंग का अध्ययन किया है, और एक दशक से अधिक समय से बच्चों की कितबों का चित्रण, लेखन और डिज़ाइन कर रही हैं। स्वयं चित्रकार होने के कारण उन्होंने प्रकृति के अनेक भव्य तथा आकर्षक चित्र साकार किए हैं। उन्होंने समस्त भावनाओं और अनुभूतियों की अभिव्यक्ति प्रकृति के माध्यम से की है। ‘गुठली तो परी है’, ‘तीस की मुर्गी बीस में’, ‘गुठली तो पराई है’ आदि उनकी प्रमुख रचनाएँ हैं।

കനക ശശി ഹിന്ദി സാഹിത്യത്തിലെ ബഹുമുഖമായ സാഹിത്യകാരിയാണ്. അവ രുടെ ജന്മം ഫെബ്രുവരി 25, 1980-ൽ മധ്യപ്രദേശിലായിരുന്നു. അവർ എഴുത്തിന് പുറമേ ഡിസൈനിംഗ്, ഡ്രോയിംഗ് ജോലികളും ചെയ്യാറുണ്ട്. ചില്ലകളും ഇലകളും വിത്തുകളും തൂവലുകളും ശേഖരിച്ച് അവയ്ക്കുള്ളിൽ എന്ത് കഥകൾ ഉണ്ടെന്ന് ചിന്തിച്ച് പ്രകൃതിക്ക് നടുവിലൂടെ നടക്കാൻ കനക് ശശി ഇഷ്ടപ്പെടുന്നു. ഒരു കലാകാ രിയായ അവർ വഡോദരയിലെ എം.എസ്. യൂണിവേഴ്സ്റ്റിയിൽ പെയിന്റിംഗ് പഠിച്ചു. ഒരു ദശാബ്ദത്തലേറെയായി കുട്ടികളുടെ പുസ്തകങ്ങൾ ചിത്രീകരിക്കുകയും എഴുതു കയും രൂപകൽപ്പന ചെയ്യുകയും ചെയ്തു. ഒരു ചിത്രകാരി എന്ന നിലയിൽ പ്രകൃതി യുടെ ഗംഭീരവും ആകർഷകവുമായ നിരവധി ചിത്രങ്ങൾ അവർ സൃഷ്ടിച്ചിട്ടുണ്ട്. എല്ലാ വികാരങ്ങളും അനുഭൂതികളും അവർ പ്രകൃതിയിലൂടെ പ്രകടിപ്പിച്ചു. “ഗുലി തോ പരി ഹേ’, ‘തീസ് കീ മുർഗി ബീസ് മേം’, ‘ഗുലി തോ പരായി ഹേ’ തുടങ്ങി യവ അവരുടെ പ്രധാന രചനകളാണ്.

बारिश के बाद शब्दार्थ

  • बारिश – rain, മഴ
  • झरे – താഴെ വീണത്
  • अमलतास – കാസിയ ഫിസ്റ്റുല, Cassia fistula
  • गीली – നനഞ്ഞ, wet
  • नया – പുതിയ, new
  • मिट्टी – മണ്ണ്, soil
  • पीला – മഞ്ഞ, yellow
  • नोक – നുറുങ്ങ് tip
  • फिसलना – വഴുതിപ്പോകാൻ to slip
  • बूँद – തുള്ളികൾ drops
  • ज़रूरी – ആവശ്യമാണ് necessary
  • चिल्लपों – ബഹളം
  • निपटाना – പൂർത്തിയാക്കുക, to complete
  • चेहरा – മുഖം face
  • दोस्त – സുഹൃത്ത് friend
  • घुटना – മുട്ട് knee
  • नाला – കനാൽ canal
  • चींटा – ഉറുമ്പ് ant
  • ज़बरदस्ती – ബലമായി
  • कोसम का पेड़ – കോസ വൃക്ഷം
  • केंचुआ – മണ്ണിര, earthworm
  • उछलना – എടുത്തുചാടുക,
  • फुदकना – ചാടിച്ചാടി നടക്കുക, to hop
  • हथेली – കൈപ്പത്തി palm
  • हामी – സമ്മതം consent
  • छलाँग लगाना – കുതിച്ചു ചാടുക, to take a leap
  • हिचकोला खाते-खाते- കുലുക്കപ്പെടൽ being shaken
  • पलट गई – മറിച്ചിട്ടു turned over
  • साँस थ – ശ്വാസമടക്കി, holding the breath
  • हनी – ശാഖ, branch
  • उलटना – മറിയുക
  • आहिस्ता – പതുക്കെ slowly
  • गोकुल गाय – തിളങ്ങുന്ന ചുവന്ന നിറത്തി ലുള്ള പ്രാണി
  • माचिस की डिब्बी – തീപ്പെട്ടി match box
  • इकट्ठा करना – ശേഖരിക്കാൻ to collect
  • झट से – പെട്ടെന്ന് suddenly
  • चाँदनी का पेड़ – രാത്രി മുല്ലപ്പൂ night jasmine
  • ज़ोर से हिला दिया – ശക്തിയായി കുലുക്കി shaken strongly
  • तरबतर – നനഞ്ഞു കുതിർന്ന, soaked
  • भागदौड – വെപ്രാളപ്പെട്ടുള്ള ഓട്ടം running in a hurry burry
  • कीचड – ചെളി, mud
  • सराबोर – നന്നായി നനഞ്ഞ, well soaked
  • ढूँढना – തിരയാൻ, to search
  • नाव – ബോട്ട് boat
  • पत्तियाँ – ഇടുന്നു leaves
  • सवारी – യാത്രക്കാരൻ traveller
  • मौसम – സീസൺ season
  • कोशिश करना – കഠിനാധ്വാനം hardwork
  • मेंढक – തവള frog

Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity

Reviewing SCERT Kerala Syllabus 7th Standard Basic Science Notes Pdf and Class 7 Basic Science Chapter 3 Question Answer Notes Solutions Pdf The World of Electricity can uncover gaps in understanding.

The World of Electricity Class 7 Questions and Answers Notes

Class 7 Basic Science Chapter 3 The World of Electricity Question Answer Pdf

Basic Science Class 7 Chapter 3 Question Answer Kerala Syllabus

Let Us Assess

Question 1.
What is the energy change in a battery when it is connected to an emergency lamp?
a) Electrical energy changes into light energy
b) Light energy changes into chemical energy
c) Chemical energy changes first into electrical energy and then into light energy
d) Chemical energy changes into electrical energy
Answer:
c) Chemical energy changes first into electrical energy and then into light energy

Question 2.
Of the following, which is in an open circuit?
a) Rotation of fan
b) A damaged bell is switched on
c) Working of a mixie
d) Glowing of a bulb
Answer:
b) A damaged bell is switched on

Question 3.
From where do the artificial satellites get electricity for its working?
a) Solar panel
b) Diesel
c) Petrol
d) Coal
Answer:
a) Solar panel

Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity

Question 4.
Sometimes there is power shortage in Kerala during summer season.Why?
Answer:
During the summer, water levels in hydroelectric dams decrease, leading to reduced electricity generation.

Question 5.
A person is standing in water. An electric line breaks and falls into the water. Is the person likely to get an electric shock? Give reason.
Answer:
Yes, the person is likely to get an electric shock because water is a good conductor of electricity.

Question 6.
Observe the diagram of an open circuit. Convert it to a closed circuit using appropriate symbols and draw it
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Answer:
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Class 7 Basic Science Chapter 3 Extended Activities Answers

A) Construct electric circuits using different devices and battery.
Answer:
Hint:
Simple Circuit with a Bulb

  • Connect the battery to the bulb using wires.
  • Connect one end of a wire to the positive terminal of the battery.
  • Connect the other end of the same wire to one terminal of the bulb.
  • Connect another wire to the other terminal of the bulb.
  • Connect the free end of this wire to the negative terminal of the battery.
  • When the circuit is complete, the bulb should light up.

Adding a Switch to the Circuit

  • Construct the simple circuit with a bulb as described above.
  • Insert a switch into the circuit by connecting it between one of the wires.
  • Open the switch to break the circuit and turn off the bulb.
  • Close the switch to complete the circuit and turn on the bulb.

Using an LED

  • Connect the positive terminal of the battery to the longer leg (anode) of the LED.
  • Connect the shorter leg (cathode) of the LED to a wire.
  • Connect the other end of this wire to the negative terminal of the battery.
  • The LED should light up. If it doesn’t, try reversing the connections.

B) Construct a model of a hydroelectric power station and explain its working. .
Answer:
Hint:
Steps to Build the Model:

  • Prepare the Shoebox: Cut a rectangular hole in the lid of the shoebox, large enough to fit the plastic tub/container.
  • Create the Water Reservoir: Place the plastic tub/container inside the shoebox. This will represent the reservoir where water collects.
  • Build the Dam: Cut a piece of cardboard or foam board to fit across the opening of the shoebox, leaving space for the water to flow underneath. This will represent the dam. Glue the dam in place.
  • Add the Water Wheel: Attach the toy water wheel to one side of the dam, inside the shoebox. Make sure it can spin freely.
  • Connect the Generator: Attach the toy generator to the axle of the water wheel. This is the part that will generate electricity.
  • Decorate (Optional): You can paint the shoebox to look like a mountain or a landscape with rivers and lakes using blue paper or paint.

How it works:

  • Water Collection: Water is collected in a reservoir, like a lake.
  • Dam: A dam holds back the water, creating pressure.
  • Water Wheel: Water flows through the dam. spinning a wheel.
  • Generating Electricity: The spinning wheel turns a generator, making electricity.
  • Powering Things: The electricity can be used to power lights, toys, or charge batteries

Class 7 Basic Science Chapter 3 Intext Question and Answers

Question 1.
Above is a scene from home. Haven’t we experienced similar situations at our home as well?
Answer:
Yes.

Question 2.
What do we usually do to get light when there is a power failure?
Answer:

  • Candles are used.
  • Flashlights or torches are used.
  • Oil lamps are used.
  • Battery-powered lanterns are used.

Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity

Question 3.
Do you have an emergency lamp at your home? cr>l6BT3g}6)s nI)§lG6rr50?
Answer:
Yes

Question 4.
What are the things needed to make an emergency lamp? Write them in the Science Diary based on the following indicators.
a. How will we get the electricity to make the emergency lamp work?
b. Don’t we need a bulb to get light?
c. How will we connect each part?
d. How will we make a stand?
Answer:
a. We need batteries to provide electricity.
b. Yes, we need a light bulb or an LED to produce light.
c. Use wires to connect the batteries to the light bulb.
d. Use a piece of wood or cardboard to make a simple stand to hold the bulb and batteries.

Availability of Electricity:

Electricity: It is a form of energy that can be easily converted into many other forms.

Question 5.
Where do we get electricity from? Pictures of some devices are given below. Observe them. Where does each of these devices get its electricity from? Write it down in the Science Diary.
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Answer:

  • Remote: Gets electricity from batteries, e Clock: Gets electricity from batteries.
  • Mobile: Gets electricity from a rechargeable battery.
  • LED Lamp: Gets electricity from a power batteries.
  • Iron Box: Gets electricity from AC mains (Power supply)

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Electric cells are devices that can convert chemical energy into electrical energy. Electrical energy is stored as chemical energy in them. This chemical energy is converted into electrical energy when we use them.

Question 6.
Have you heard of cell and battery? What is the difference between cells and batteries? Look at the pictures below. What is the difference between them?
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Answer:
Figure 1 is a cell. Figure 2 is battery. A cell is a single unit that produce electricity chemically. A battery is an arrangement made by connecting more than one cell into a single unit.

Question 7.
Observe the pictures (A, B, C) in which the cells are connected in three different ways.
a) Do all of them represent the right way for making a battery?
b) Which among them is wrong?
c) Which one will give more electricity?
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Answer:
a) No
b) B is wrong
c) C will give more electricity. When you add more cells to make a battery, the electricity gets stronger.

  • A cell is a small device that produces electricity from chemicals inside it.
  • A battery is made up of two or more cells connected together to produce electricity.

Question 8.
Observe the pictures given below.
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a) From which source do these two devices get electricity?
b) What is the difference between the sources of electricity used in these devices?
Answer:
a) Clock: Gets electricity from cell.
Mobile: Gets electricity from a rechargeable battery.

b) The clock usually uses a small battery or a cell that cannot be used again when its charge is completely used up, while a mobile phone needs a bigger battery which is rechargeable.
Cells – Rechargeable and Non-rechargeable

Question 9.
What would you do if the cell in a clock is not working? What if your mobile phone runs out of charge?
Answer:
A cell in a clock cannot be used again when its charge is completely used up. But the battery in mobile phones can be recharged and used again.

Question 10.
You may be using rechargeable and non-rechargeable cells in different devices at home. Classify them and write in your Science Diary.
Answer:
Rechargeable Cells:

  • Mobile Phones
  • Laptops
  • Digital Cameras
  • Remote Controlled Toys

Non-Rechargeable Cells:

  • TV Remote
  • Wall Clocks
  • Flashlights
  • Watch

Question 11.
Observe this picture. What kind of bulbs are used in emergency lamps?
Answer:
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Light Emitting Diode bulbs or Incandescent Bulbs.

Question 12.
What are the advantages of using LED?
Answer:

  • Saves Energy.
  • Lasts Longer.
  • Brighter Light.
  • Eco-friendly.
  • Safe.

Filament Bulb: A traditional bulb that glows when electricity passes through the filament due to the heating up of the filament, but it wastes a lot of energy as heat.
CFL (Compact Fluorescent Lamp): CFL requires less energy compared to filament lamps. CFL was widely used till recently. But nowadays CFL is not commonly used.
Light Emitting Diode (LED): LED bulbs require less energy than CFL. New generation LED bulbs have also been invented recently.
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Question 13.
What is an LED module?
Answer:
LED module is an arrangement of more than one LED bulb in a strip.

Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity

Question 14.
Don’t you have connecting wires, LED module, 9 V battery and a connector in your Science Kit? Try to light up the LED module using them. Do this experiment in groups and present in the class. Could all the groups light up the bulb? Draw the mode of connection in your Science Diary.
Answer:
Hint:

  • Gather materials: LED module, connecting wires, 9V battery, and connector.
  • Connect the positive (+) terminal of the LED module to the positive terminal of the battery using a ware.
  • Connect the negative (-) terminal of the LED module to the negative terminal of the battery using another wire.
  • Ensure the connections are secure.
  • The LED should light up if the connections are correct and the battery has power.
  • Groups can try the experiment and draw the connections in their Science Diary.
  • Some groups-may face challenges if connections are not properly made or if the battery is drained.
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Question 15.
Haven’t you lighted the LED bulb. Write down the electric source, electric device and connecting wire used.
Answer:
Electric source – 9V battery
Conducting wire- Copper wire
Electric device – LED, Module

Question 16.
Observe the following pictures. Parts of certain circuits are represented in the pictures given below. Will the bulbs in these circuits glow? Why? Analyse the pictures and record in the Science Diary.
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Answer:
The bulbs in each circuit will not glow, because wires are open. So, no current will flow through the circuit.
Closed Circuit and Open Circuit
A circuit is considered closed when it is complete. Conversely, it is termed an open circuit when incomplete. Electric devices require a closed circuit to function.

Question 17.
Are the following circuits closed or open? Why? Analyse the figures and write down in the Science Diary.
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Answer:
Circuit 1 is open and circuit 2 is closed. In circuit 1 the bulb doesn’t glow. This is because the electricity cannot flow through the broken circuit to reach the bulb, so it remains off. In Circuit 2, where the circuit is closed, the bulb glows. This is because the closed circuit provides a complete path for electricity to flow from the power source to the bulb, causing it to light up.

Question 18.
We use bulbs and fans while we are in a room. Then are the circuits of the bulb and fan closed or open? Don’t you switch off the bulb and fan when you leave the room? How can we make circuits open and closed as required?
Answer:
When we’re in the room and using bulbs and fans, their circuits are closed because electricity flows through them. However, when we leave the room and switch them off, we open the circuits, stopping the flow of electricity. We can make circuits open or closed by using switches. When we turn switches ON, circuit becomes closed and current will flow through it. When the switch is turned OFF the circuit will become open and current will not flow through it.

Question 19.
Observe the picture. What arrangement do you see in the picture to turn the bulb on and off whenever required?
Answer:
A switch is there to turn the bulb ON and OFF.
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Switch: Switch is a device used to make a circuit closed or open when required. A circuit becomes closed when switch is turned on. It becomes open when switch is turned off.
Different types of Switches:
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Question 20.
How does electricity reach the bulb from the battery?
Answer:
The battery has stored electrical energy. Wires create a path for electricity to flow. When the switch is turned on, it closes the circuit. Electricity passes through the wires to the bulb. The electrical energy makes the bulb glow.

Question 21.
Do all substances allow electricity to pass through?
Answer:
Some materials, like metals, allow electricity to pass through easily. Other materials, like rubber, wood, and plastic, do not allow electricity to pass through.

Substances Conduct Electricity Substances that do not conduct electricity
  • Metals
  • Water
  • Graphite
  • Plastic
  • Rubber
  • Wood
  • Glass

Question 22.
You might have noticed substances which conduct electricity7 and do not conduct electricity. Design an experiment to distinguish them and present it in the class.
Answer:
Hint:
To identify and distinguish between substances that conduct electricity (conductors) and those that do not (non-conductors).
Materials Needed:
A small light bulb (LED works well), a battery (9V or similar), electrical wires , various test substances (e.g., metal spoon, plastic ruler, rubber band, piece of wood, copper wire, aluminum foil, etc.), a switch (optional)

Connect the Circuit:

  • Attach the positive terminal of the battery to one end of the light bulb using an electrical wire.
  • Connect the other end of the light bulb to one of the clips.
  • Attach another wire to the negative terminal of the battery and connect it to the other clip.
  • If using a switch, you can place it between the battery and the light bulb for easier control.

Procedure:

  • Connect each test substance one by one between the clips.
  • Note whether the light bulb lights up for each substance.

Observations:

  • Conductors: If the light bulb lights up, the substance is a conductor of electricity. This typically happens with metals like copper wire, aluminium foil, and a metal spoon.
  • Non-Conductors: If the light bulb does not light up, the substance is a non-conductor (insulator). This is typical for materials like plastic rulers, rubber bands, and wood pieces.

Activity
Take the 9 V battery, connecting wire and the LED module.from your Science Kit. Arrange them as shown in the figure. Will the LED module glow in this circuit? Why? Connect the ends marked A and B using different materials.
Materials: Safety pin, a piece of wood, paper, steel scale, charcoal, pencil graphite, plastic bangle, metal bangle, wet paper, copper wire.
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Observations:
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Question 23.
Which of the materials you used made the LED glow? What could be the reason?
Answer:
Safety pin, Steel scale, Pencil graphite, Metal bangle, Wet paper, and Copper wire make the LED glow. Because they are good conductors of electricity.

Question 24.
Isn’t it due to the passage of electricity through those materials?
Answer:
Yes. It is due to the passage of electricity through those materials.

Question 25.
Which materials conduct electricity?
Answer:
Safety pin, Steel scale, Pencil graphite, Metal bangle, Wet paper, Copper wire.

Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity

Question 26.
Which materials do not conduct electricity?
Answer:
Paper, Wood, Charcoal, Plastic Bangle.

Question 27.
Place your fingers over the ends of A and B in the device made for the experiment. Does the LED glow? Repeat the experiment with wet fingers. What change did you notice? Give reason. (Do not operate a switch with a wet hand. Find out the reason behind it and write it down in the Science Diary.)
Answer:
Dry Fingers: There is no glow, because dry fingers are poor conductors of electricity, so they don’t complete the circuit needed to light the LED.
Wet Fingers: LED glows because water helps conduct electricity, completing the circuit.

Question 28.
When we turn on a switch do we touch the parts through which electricity passes?
Answer:
No. The parts we touch in electrical appliances are made of insulators.

Question 29.
What about the parts that conduct electricity?
Answer:
The parts that conduct electricity, such as the wires and metal contacts inside the switch, are hidden inside the switch housing, where you can’t touch them directly.
Conductors: Conductors are the substances that allow electricity to pass through them. Examples of conductors include iron, gold, copper, steel, graphite, and water.
Insulators: Insulators are the substances that do not allow electricity to pass through. Dry wood, paper, plastic, and cloth are examples of insulators.

Question 30.
There are many situations where conductors and insulators are used. Tabulate such situations you are familiar with.
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Answer:
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 18

Activity
Let’s repeat the experiment that you have done to distinguish conductors and insulators. Connect the ends A and B using each of the following substances. Materials: iron nail, copper wire, silver ornament, gold ornament, aluminium wire, a piece of zinc, lead wire, magnesium ribbon, a piece of tin sheet.
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Inference: All these substances conduct electricity. They are all metals.
Different types of metallic wires:
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Question 31.
Which metal do we normally use to transmit electricity though electric lines?
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Answer:
Copper and Aluminium. Copper is great for electric wires because it lets electricity flow easily and is strong and flexible. Aluminium is also good, though not as good as copper, but it is lighter and cheaper, making it good for long-distance power lines.

Question 32.
What is the reason for not using copper wire in electric lines? Inquire.
Answer:

  • Cost: Copper is more expensive than other materials like aluminium.
  • Weight: Copper is heavier than aluminium. Heavier wires need stronger support structures, like poles and towers, to hold them up.
  • Availability: Aluminium is more abundant and easier to get in large quantities.

Question 33.
Haven’t you prepared separate circuits for operating LED module and mini motor? What will happen if you include all of them in the same circuit?
Answer:
Different devices like an LED module and a mini motor have different power requirements. Combining them in the same circuit can cause problems like overloading and device damage.

Question 34.
Do all the devices in your home start function when a single switch is turned on?
Answer:
In your home, each device (like lights, fans, TV) has its own switch. This allows you to turn on only the device you need without affecting others.

Question 35.
If so, how many circuits will be needed in the house?
Answer:
Separate circuits for different areas. Different devices need different circuits to function properly and safely.

Question 36.
What tools did you use to make the circuits? Haven’t you seen electricians use different tools for different purposes such as cutting wire, stripping off insulation and testing electric current.
Observe the pictures. Find out the uses of each of the below tools from an electrician.
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Answer:
Cutting Pliers: Electricians use cutting pliers to cut wires.
Wire Stripper: Wire strippers are used to remove the plastic coating from wires without cutting the wire itself.
Screwdriver: Screwdrivers are used to tighten or loosen screws.
Tester: A tester checks if a wire or device has electricity flowing through it.

Question 37.
Observe the given circuits. Identify the parts marked A, B, C and D.
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Answer:
Circuit 1:
A – Unit bulb
B – Cell
C – Open switch
D – Wire

Circuit 2:
A – Glowing bulb
B – Cell
C – Closed switch
D – Wire

Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity

Question 38.
What are the differences between the two circuits?
Answer:
Circuit 1 is open circuit. So, no current flows through it. Circuit 2 is closed circuit, so current flows through it.

Question 39.
Draw the circuits you have already made using the symbols.
Answer:
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Question 40.
We can use 9 V battery and LED module for making an emergency lamp. How will you connect them to make a circuit? Try to draw it.
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Answer:
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Question 41.
We have used a 9 V battery to make an emergency lamp. Will we get an electric shock if we touch the wire connected to the battery?
Answer:
No. The voltage (9 V) is too low to push a dangerous amount of current through your body.
Lightning and Electricity
Have you observed the lightning during the rainy season? Clouds carry a significant
electrical charge. Lightning occurs when this charge transfers between clouds or to the
ground. Lightning strikes can lead to accidents due to their potent electric current.

Question 42.
If, somehow, the electricity used at home passes through our body, it can cause electric shock. What is the reason?
Answer:
Electricity passing through our body can cause electric shock because our body conducts electricity. The electricity we used at home is of 230 V. It is not safe to use high voltage electricity while conducting experiments.
Electric shock: We get an electric shock when electric current passes through our body. Our body is an electric conductor since water is present in the living cells. Electric shock occurs when a broken power line or an external electric source, like an uninsulated circuit comes into contact with the body. Sometimes this causes severe bums. Cardiac arrest is the major reason for death due to electric shock.

Question 43.
Observe the given situations. Find out the situations in which there is a chance for electric shock and put a tick mark (✔) in the appropriate boxes.
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Answer:
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 28

Question 44.
What are the precautions to be taken while handling electrical appliances?
Answer:

  • Never touch electrical appliances with wet hands.
  • Always unplug appliances before cleaning or repairing them.
  • Keep appliances away from water.
  • Never overload electrical sockets.
  • Don’t use damaged cords or plugs.

Question 45.
What happens if you try to touch or move someone who is experiencing an electric shock? Won’t we also get the shock?
Answer:
Yes. Hence one should never touch a person who has an electric shock.
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Question 46.
What are the things to be done immediately to save a person who has suffered an electricshock?
Answer:

  • The first thing to be done is to disconnect the electric contact. You can switch off or remove the fuse for this. If it is not possible, separate the person from the electric circuit using a dry wooden stick or some other good insulator.
  • In the case of heart failure, perform chest compressions. Place one hand on top of the other and apply continuous pressure on the victim’s chest. This should be done until the heart starts beating again.
  • If breathing stops, give artificial respiration. Keep the body warm by massaging.
  • Take the person immediately to a hospital if the shock is severe.

Question 47.
Don’t we use a generator at school when some fairs or PTA meetings are held?
Answer:
Yes. For generating electricity.

Question 48.
Which fuel is used to operate a generator?
Answer:
The generator produces electricity making use of energy from fuels like petrol, kerosene, diesel – etc.

Question 49.
Can generators be used regularly to get electricity at home and school? Discuss on the basis of cost of diesel, pollution etc. What is the solution?
Answer:
Generators can be used regularly to get electricity at home and school, but there are important factors to consider:

Cost of Diesel: Generators run on diesel, which can be expensive. Using generators regularly may increase fuel costs significantly.
Pollution: Generators produce exhaust gases that contribute to air pollution. Regular use of generators can worsen air quality and harm the environment.

Noise: Generators can be noisy, which can be bothersome in both home and school settings.
The solution is to explore alternative energy sources like solar or wind power. Solar panels can be installed on rooftops to harness sunlight, providing clean and renewable energy. Wind turbines can also generate electricity from wind power.

Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity

Question 50.
You might have seen metallic wires stretched over tall poles. From where do these lines bring electricity?
Answer:
Electricity is brought through metallic wires stretched over tall poles from power stations.

Question 51.
How this electricity is generated?
Answer:
It is generated, often through spinning turbines using the force of falling water in hydroelectric dams or burning fuels like coal or gas.

Question 52.
How do generators in a hydroelectric power station work?
Answer:
Generators in hydroelectric power stations work using the energy obtained when water stored in reservoirs of dams falls from a height. In dams, water which is stored in reservoirs is carried through pipes and made to fall forcefully on to the turbines connected to the generators. The force of falling water rotates the turbines. The generators connected to the turbines start to work and produce electricity. This electricity is transmitted to various places through electric lines.
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Question 53.
A major part of electricity produced in Kerala is from the hydroelectric power station in Idukki. Discuss the merits of hydroelectric power stations as compared to diesel generators based on cost of fuel, pollution etc.
Answer:
Hydroelectric power stations, like the one in Idukki, have several advantages over diesel generators. Firstly, they use water to produce electricity, which is free, while diesel generators need costly fuel. Secondly, hydroelectric stations produce clean energy without pollution, whereas diesel generators release harmful gases that can damage the environment and our health. Overall, hydroelectric power is cheaper and much better for the environment than using diesel generators.

Other Possibilities for Electric Power Generation
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We already understood that electricity is produced in our country by using fuels like coal and diesel. We also use the power of wind and tidal waves as well as nuclear energy.
Observe the pictures given below.
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  • Solar cell is a device that converts solar energy into electrical energy.
  • Solar panel is a combination of two or more solar cells.
  • Solar energy is a solution for the future energy crisis. Cost effective technologies for harnessing solar energy are to be developed.
  • Researches are going on for this purpose.

Question 54.
The production of electricity has to be increased when there is higher consumption. Doesn’t the generation of more electricity require more fuels?
Answer:
Yes.
Observe this poster.
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Question 55.
What message does this poster convey?
Answer:
It reminds us to turn off lights and appliances when not in use, and to conserve energy to help protect the environment and save money on electricity bills.

Question 56.
Which are the circumstances in which electricity is wasted? Discuss.
Answer:

  • Leaving lights or appliances turned on when not in use.
  • Using inefficient or old appliances that consume more electricity than necessary.
  • Poor insulation or drafty windows that cause heating or cooling systems to work harder.
  • Overcharging electronic devices.
  • Running electronics in standby mode instead of fully turning them off.

Question 57.
We have to adopt certain measures to prevent wastage of electricity and to ensure its judicious use. Prepare a poster highlighting these factors and display it in the class room.
Answer:
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The World of Electricity Class 7 Notes Extra Questions and Answers

Question 1.
What is the difference between a cell and a battery?
Answer:
A cell is a single unit that produces electricity, while a battery is a collection of cells combined together to produce more power.

Question 2.
Can you recharge all types of cells?
Answer:
No, only certain types of cells, like rechargeable batteries, can be recharged multiple times by passing an electric current through them in the opposite direction of discharge.

Question 3.
What are the components of a basic electric circuit?
Answer:
A basic electric circuit consists of a source of electrical energy (such as a battery), conductors (wires), and a load (such as a light bulb).

Question 4.
What happens in an open circuit?
Answer:
In an open circuit, electric current cannot flow because the path is interrupted. As a result, the electrical components do not work.

Question 5.
Give examples of conductors and insulators.
Answer:
Examples of conductors: Copper wire, aluminium foil, iron.
Examples of insulators: Rubber, plastic, glass, wood.

Question 6.
What is electric shock?
Answer:
Electric shock occurs when a person’s body becomes part of an electric circuit, causing electricity to flow through them.

Question 7.
What should you do if someone receives an electric shock?
Answer:
Turn off the power source if possible, and if the person is unconscious, call for emergency medical assistance immediately.

Question 8.
Why is it important to never touch electrical appliances with wet hands?
Answer:
Water is a good conductor of electricity, so touching electrical appliances with wet hands can increase the risk of electric shock.

Question 9.
What is electric power generation?
Answer:
Electric power generation is the process of producing electricity from various energy sources like coal, natural gas, wind, solar, and water.

Question 10.
What is a generator?
Answer:
A generator is a device that converts mechanical energy into electrical energy.

Question 11.
How does a hydroelectric power station work?
Answer:
Water flows through turbines, causing them to spin. The turbines are connected to generators that convert the mechanical energy into electrical energy.

Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity

Question 12.
Name two simple ways to save electricity at home.
Answer:
Turn off lights when not in use and unplug electronic devices when they are not being used.

Question 13.
Observe the picture.
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A) Which among the following can be used to light the bulb in the above arrangement? Why? [Copper wire, Glass, Aluminium wire, Refill, Iron wire, Rolled paper, Pencil graphite] »
B) The symbols used in circuit diagrams are given below. Name them.
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C) Draw the symbols of switch ‘on’ and ‘off positions.
Answer:
A) Copper wire, Aluminium wire, Iron wire, Pencil graphite. All these are good conductor 01 electricity.
B) a- Cell,
(b is already given)
c-Wire
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 37

Question 14.
This is an electric circuit prepared by a student.
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 38
A) Which materials given below can be used to light the bulb in the circuit?
i) thick copper wire
ii) empty refill
iii) dried rib of a coconut leaf
iv) a special type of wire made up of lead and tin
v) paper

B) Which object from this can be used to arrange fuse in this circuit?
Answer:
A) Thick copper wire and a special type of wire made up of lead and tin.
B) A special type of wire made up of lead and tin: This wire, often used in fuses, can melt if too much current flows through, breaking the circuit and preventing damage to the rest of the components.

Question 15.
Notice the two circuits.
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 39
3-volt LED available from fancy shops are used in these circuits. As soon as the second circuit is turned on, the LED burns out.
A) What could be the reason for this?
B) What arrangement should be made in the circuit to prevent such damages while working?
C) What safety precautions should be taken while using electric devices?
Answer:
A) The LED bums out because battery connected with the wrong polarity. LED’s one end should be connected to the negative of battery and other should be connected with positive of battery.

B) Double-check the polarity of the LED and the battery to ensure they are connected correctly.
C)
• Never touch electrical devices with wet hands.
• Turn off devices before plugging or unplugging them.
• Use devices according to their instructions.

Question 16.
Observe the picture.
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 40
A) Which of the following materials can be used to complete the circuit and light the bulb? [pencil graphite, iron nail, glass rod, steel spoon, plastic scale, golden bangle]
B) Write the names of the devices marked 1,2 and 3 in the figure and draw the symbols.
Answer:
A)
• Pencil graphite
• Iron nail
• steel spoon
• golden bangle
B) Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 41

Question 17.
A closed loop made up of wires and components like bulbs or motors. Electricity flows through this loop, powering devices and making them work. Without a complete circuit, electricity cannot flow, and devices won’t function.
A) ‘What ¡s an electric circuit?
B) Why do we need a switch in an electric circuit?
Answer:
A) Electric circuit is an arrangement that passes electricity from an electric source to a device. A circuit requires at least an electric source, connecting wire and an electric device.

B) We need a switch in an electric circuit to control when the electricity flows. It allows us to turn devices on and off easily, saving electricity when they are not needed.

Question 18.
Observe the Circuit.
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 42
Complete the circuit replacing the buzzer with a mini motor and make it work. Illustrate how this circuit is arranged.
Answer:
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 43

Question 19.
Some electric circuits are given below. None of the bulbs in these circuits is glowing. Identify its reason and note it down.
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 44
Answer:
None of the bulbs in these circuits is glowing. Because these circuits are open.

Question 20.
A) What is meant by a conductor? Write examples.
B) What is meant by a insulator? Write examples.
Answer:
A) Conductors are those materials which allow electricity to flow through them. Examples copper, aluminium, water, alloys of metals, graphite, electrolytes.
B) Insulators are those materials which do not allow electricity to pass through them. Examples wood, glass and plastic etc.

Question 9.
We use different types of switches in different situations. Which all you know?
Answer:
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 45

Question 21.
Which of the following is an insulator?
a) Cello tape
b) Aluminium foil
c) Wet paper
d) Steel spoon
Answer:
a) Cello tape

Question 11.
Which one of the following is not a source of electricity?
a) Solar panel
b) Electric motor
c) Storage battery
d) Generator
Answer:
Electric motor

Question 22.
Which of the following statements not applicable to LED?
a) Need less energy
b) High efficiency
c) Low cost
d) Need more electric power
Answer:
Need more electric power

Question 23.
“Due to 30% shortage of rainfall, Kerala will be in darkness. If monsoon is not received in full, we will be facing severe power crisis. This can be overcome to some extent by using electricity judiciously and avoiding its wastage.” Have you noticed the news report?
A) Write down two precautions to avoid the wastage of electricity.
B) What first aid will be given to a person affected with electric shock?
Answer:
A)

  • Turn off lights and appliances when not in use: Make sure to switch off lights, fans, and other electrical devices when you leave a room.
  • Use energy-efficient appliances: Choose appliances that use less electricity, like LED bulbs and energy-efficient refrigerators.

B)

  • The first thing to be done is to disconnect the electric contact. You can switch off or remove the fuse for this. If it is not possible, separate the person from the electric circuit using a dry wooden stick or some other good insulator.
  • In the case of heart failure, perform chest compressions. Place one hand on top of the other and apply continuous pressure on the victim’s chest. This should be done until the heart starts beating again.
  • If breathing stops, give artificial respiration. Keep the body warm by massaging.
  • Take the person immediately to a hospital if the shock is severe.

Question 24.
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 46
A) What may be the reason for the increase in the electricity bill of Babu?
B) Write three suggestions for reducing the use of electricity.
Answer:
A) Babu may be using more electrical appliances compared to Ammu, such as multiple fans, bulbs, and a pump set, which consume more electricity.

B)

  • Turn off lights and fans when not needed: Make sure to switch off lights and fans when leaving a room or not using them.
  • Use energy-efficient appliances: Replace old bulbs with LED bulbs, which use less electricity. Choose energy-efficient fans and appliances.
  • Limit use of high-power appliances: Use appliances like the pump set only when necessary and avoid leaving them running unnecessarily.

Question 25.
Electricity is precious and should not be wasted. When we leave lights or fans on when not
needed, we waste electricity. Using energy-efficient appliances and turning things off when we’re not using them can help save electricity.
A) Why is it important not to waste electricity?
B) How can we save electricity at home?
Answer:
A) Electricity is important, and using it wisely helps save money and protect the environment.
B) We can save electricity by turning off lights and fans when we don’t need them and using energy- efficient appliances.

Question 26.
Electricity is generated in power plants. These plants use different sources like coal, natural gas, water, wind, or sunlight to produce electricity. The electricity is then sent through power lines to homes, schools, and buildings.
A) Where is electricity generated?
B) How does electricity reach our homes from power plants?
Answer:
A) Electricity is generated in power plants.
B) Electricity is sent through power lines from power plants to homes, schools, and buildings.

Question 27.
Hydroelectric power stations use the energy of moving water to generate electricity. They are usually built on rivers where water flows downhill. The force of the moving water spins turbines connected to generators. This process produces electricity that can power homes, schools, and industries.
A) Where are hydroelectric power stations typically built?
B) What are the advantages of hydroelectric power stations?
Answer:
A) Hydroelectric power stations are typically built on rivers where water flows downhill.
B) Advantages include clean energy generation and no fuel cost.

Question 28.
A) What is a generator?
B)Why are generators important?
Answer:
A) A generator is a machine that produces electricity by converting mechanical energy into electrical energy.
B) Generators helps in producing electricity in power stations which can be transmitted to distant areas and it helps to power up various electric devices.

Question 29.
Match the following
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 47
Answer:

A B
Electric power production Hydroelectric power station
Electric Source  Solar Panel
Electric Device LED Module
Electric Conductor Transmission lines

Question 30.
Prepare posters indicating the importance of saving electricity.
Answer:
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 50

The World of Electricity Class 7 Notes

• Electricity: A form of energy that can be easily converted into many other forms.
• Sources of Electricity: Devices such as electric cells, generators, and solar cells that provide electricity are known as sources of electricity.
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 48

• Cell and Battery: A cell is a single unit that produces electricity chemically, while a battery is a collection of cells connected together to provide a greater electrical output.

■ Rechargeable Cells: Cells that can be recharged and used multiple times by restoring their charge with an external electrical source.
■ Non-rechargeable Cells: Cells that are used once and then discarded because they cannot be recharged.

• Lighting a Bulb with a Battery: Connecting a battery to a bulb with wires completes a circuit, allowing electricity to flow and light the bulb.

■ Filament Bulb: A bulb with a thin wire (filament) that glows and produces light when electricity passes through it.
■ CFL (Compact Fluorescent Lamp): An energy-efficient light bulb that uses less electricity and lasts longer than traditional incandescent bulbs.
■ Incandescent Bulb: A traditional light bulb that produces light by heating a filament wire to a high temperature.

• Electric Circuit: A complete path through which electric current flows.
• Closed Circuit and Open Circuit: A closed circuit is complete and allows electricity to flow (Circuit 2), while an open circuit is incomplete and stops the flow of electricity (Circuit 1). Electric devices need a closed circuit to work.
Class 7 Basic Science Chapter 3 Question Answer Notes The World of Electricity Img 49
• Switch: A device that can open or close a circuit, controlling the flow of electricity.

• Flow of Electricity: Electricity flows from a power source through conductors, such as wires, to power devices and then back to the source.

• Conductors and Insulators: Conductors, like metals, allow electricity to flow easily, while insulators, like rubber and plastic, resist the flow of electricity.

• Symbols: It used in circuit diagrams to represent various electrical components, like batteries, bulbs, and switches.

• Electric Shock: A dangerous flow of electricity through a person’s body, which can occur if safety precautions are not followed.

• Electric Power Generation: The process of producing electricity using various methods, such as burning coal, harnessing wind, or capturing solar energy.

• Generator: A device that converts mechanical energy into electrical energy.

• Hydroelectric Power Station: A place that generates electricity by using flowing water to spin a turbine connected to a generator.

• Don’t Waste Electricity: Saving electricity by turning off lights and appliances when not in use helps conserve resources and reduce costs.

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases

Reviewing SCERT Kerala Syllabus 7th Standard Basic Science Notes Pdf and Class 7 Basic Science Chapter 2 Question Answer Notes Solutions Pdf Acids and Bases can uncover gaps in understanding.

Acids and Bases Class 7 Questions and Answers Notes

Class 7 Basic Science Chapter 2 Acids and Bases Question Answer Pdf

Basic Science Class 7 Chapter 2 Question Answer Kerala Syllabus

Let Us Assess

Question 1.
Which among the following can be used as an indicator of acid?
a. Turmeric
b. Pathimugam
c. Red litmus paper
d. Phenolphthalein
Answer:
Red litmus paper is the most suitable indicator

Question 2.
Which acid is used in automobile batteries?
a. Hydrochloric acid
b. Nitric acid
c. Sulphuric acid
d. Formic acid
Answer:
c. Sulphuric acid

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases

Question 3.
Among the liquids in the three beakers placed on the table, the first one is water, the second is an acid, and the third is a base. Is it right to identify them by touching, tasting or smelling? Why? Suggest a method to identify each of them.
Answer:
Many acids and bases can cause chemical burns or skin irritation. Tasting unknown substances is extremely dangerous. Acids and bases can cause severe damage to the mouth, oesophagus, and stomach. Inhaling vapours from acids and bases can irritate or damage the respiratory system. Water: Neutral litmus paper will show no colour change.

Acid: Red litmus paper will stay red, but blue litmus paper will turn red.

Base: Blue litmus paper will stay blue, but red litmus paper will turn blue.

Another method for acids: Add a small amount of baking soda to each liquid. Acids will react with baking soda to produce carbon dioxide gas, which will bubble.

Another method for bases: Add a few drops of phenolphthalein to each liquid. It will turn pink in basic solutions and remain colourless in neutral or acidic solutions.

Question 4.
In the laboratory, metallic caps are not used for glass bottles containing acids. Explain the reason for this.
Answer:
Acids can react with metals to form salts and release hydrogen gas. This reaction can corrode the metallic cap. To avoid the problems associated with corrosion, safety hazards, and compatibility issues, non-metallic caps (such as those made of plastic or other inert materials) are preferred for sealing glass bottles containing acids.

Question 5.
Examine the statements given below. Classify them on the basis of the properties of acids and bases.
a. Has a sour taste
b. Turns to pink when phenolphthalein is added
c. Slippery
d. Turns to pink when methyl orange is added
e. Turns the colour of Pathimugam water into yellow
f. Red litmus turns blue
g. Reacts with metals to produce hydrogen
h. Has an alkaline taste
Answer:
Properties of acids:

  • Has a sour taste.
  • Turns the colour of Pathimugam water into yellow.
  • Reacts with metals to produce hydrogen.

Properties of bases:

  • Turns to pink when phenolphthalein is added.
  • Slippery
  • Red litmus turns blue.
  • Has an alkaline taste.

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases

Question 6.
You have learnt about various indicators to identify acids and bases. Complete the table below.
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 1
Answer:
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 2

Class 7 Basic Science Chapter 2 Extended Activities Answers

Question 1.
You have identified the colour changes produced in acids and bases when various natural indicators and indicators used in the laboratory are added to them. Use this information to design science magic and present it in your class as well as in the Science Club. After the presentation, explain the scientific principle behind the magic.
Answer:
A. Red Cabbage Juice Magic:
Procedure: Show the class a beaker of red cabbage juice. Add a few drops of HCl to one part and NaOH to another part.
Result: The cabbage juice will turn red with HCl and green/blue with NaOH.
Explanation: Red cabbage contains anthocyanins, which are natural pH indicators that change colour depending on the acidity or basicity of the solution.

B. Turmeric Solution Trick:
Procedure: Dip a piece of paper into the turmeric solution and let it dry. Divide it into two pieces. Add a drop of HCl to one piece and a drop of NaOH to the other.
Result: The turmeric paper will remain yellow with HCl and turn reddish-brown with NaOH. Explanation: Turmeric contains curcumin, which turns reddish-brown in basic environments and remains yellow in acidic environments.

C. Hibiscus Petal Extract Show:
Procedure: Show the class the hibiscus extract in a beaker. Add HCl to one part and NaOH to another.
Result: The extract will turn pink/red with HCl and greenish with NaOH.
Explanation: Hibiscus petal extract contains anthocyanins, which respond to pH changes by altering colour.

Question 2.
You have understood that hydrogen is released when acids react with metals. Using this
Answer:
Materials Needed: Hydrochloric acid (HCl) solution (dilute), Zinc granules or aluminium foil, a small flask or test tube, a balloon, and a funnel.
Procedure: Place a small amount of zinc granules or crumpled aluminium foil into the flask or test tube. Using the funnel, carefully pour a small amount of dilute hydrochloric acid into the flask or test tube with the zinc or aluminium. Quickly cover the opening of the flask or test tube with the balloon to capture the gas that is produced.

As the acid reacts with the metal, hydrogen gas will be released and will start to fill the balloon. Once the balloon is sufficiently filled with hydrogen gas, carefully remove it from the flask or test tube. Inference: When an acid reacts with a metal, it produces hydrogen gas. Hydrogen is a colourless, ’ odourless gas that is lighter than air, which allows the balloon filled with hydrogen to rise and float.

Class 7 Basic Science Chapter 2 Intext Question and Answers

Question 1.
Haven’t you read Jinu’s diary entry? What could be the secret behind the experiment conducted by the teacher in Jinu’s class?
Answer:
Yes. The pink liquid in the first tumbler was probably a pH indicator solution. One common pH indicator that appears pink in basic solutions is phenolphthalein. The second tumbler, which appeared empty, likely contained a colourless acidic solution, such as vinegar (acetic acid) or lemon juice (citric acid). When the pink basic solution was poured into the acidic tumbler, the acid neutralised the base. This caused the pH to drop below the threshold, where phenolphthalein remains pink, turning it colourless or a different colour if another indicator was present.

Question 2.
Take out the glass tumblers from your Science Kit and arrange them on the desk. Add two or three drops of vinegar, tamarind water, lemon juice, salt the solution, ash suspension and baking soda solution into separate tumblers. Pour half a glass of pathimugam water into each tumbler. Does the water in any of the tumblers turn yellow? What is your observation? Record it in your Science Diary.
Answer:
Materials required: Glass tumbler, vinegar, lemon juice, salt solution, ash suspension, baking soda solution, Pathimugam water.

Procedure: We have to prepare several glass tumblers with vinegar, lemon juice, salt solution, ash suspension, and baking soda solution and then add pathimugam water to each. Here, pathimugam water will act as a natural indicator.

Observation:
1. Vinegar: Pathimugam water turned yellow. (Acidic)
2. Tamarind Water: Pathimugam water turned light yellow. (Acidic)
3. Lemon Juice: Pathimugam water turned pale yellow. (Acidic)
4. Salt Solution: No significant colour change. (Neutral)
5. Ash Suspension: Pathimugam water turned to a different shade. (Basic)
6. Baking Soda Solution: Pathimugam water changed colour. (Basic)

Inference: The colour change in pathimugam water depends on the pH of the added solution. Acidic solutions tend to turn the water yellow, while basic solutions cause different colour changes.

Question 3.
In the experiment mentioned in Jinu’s diary, the teacher must have added something to the second tumbler. Which among the following did the teacher add to turn the pink liquid into yellow? Put a tick (V) mark on the appropriate boxes, based on the experiment you have done.
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 3
Answer:
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 4

Question 4.
Do the substances that turned pathimugam water into yellow have anything common in their taste?
Answer:
They all have a sour taste. The sour taste is due to the presence of some acids in them.

Question 5.
Let’s do some more experiments to know the properties of acids. Place everyone’s glass tumblers on the desk. Fill a half portion of each glass with a different liquid from the list given below.

  • Soap water
  • Lemon juice
  • Clear baking soda solution
  • Clear lime water
  • Vinegar
  • Buttermilk
  • Tamarind water
  • Clear ash suspension

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases

Question 6.
Take blue and red litmus papers from the school laboratory. Dip blue and red litmus papers in these liquids. Tabulate your observations in the Science Diary.
Answer:
Materials required: Glass tumbler, Soap water, Lemon juice, Clear baking soda solution, Clear lime water, Vinegar, Buttermilk, Tamarind water, Clear ash suspension, Red and blue litmus paper.

Procedure: Place everyone’s glass tumblers on the desk. Fill a half portion of each glass with different liquids. Take blue and red litmus papers from the school laboratory. Dip blue and red litmus papers in these liquids.

Observation:
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 5
Inference: Lemon juice, vinegar, buttermilk, and tamarind water turned blue litmus paper red and did not change red litmus paper. Soap water, clear baking soda solution, clear lime water, and clear ash suspension turned the red litmus paper blue and did not change the blue litmus paper. This experiment shows the effectiveness of litmus paper in identifying the acidic or basic nature of different substances.

Question 7.
Which liquids turned blue litmus into red?
Answer:
Lemon juice, vinegar, buttermilk, and tamarind water.

Question 8.
Which liquids turned red litmus into blue?
Answer:
Soap water, clear baking soda solution, clear lime water, and clear ash suspension.

Question 9.
Classify the liquids you have experimented into acids and bases. Record it in the Science Diary.
Answer:

Acids Bases
Lemon juice Soap water
Vinegar Clear baking soda solution
Buttermilk Clear lime water
Tamarind water Clear ash suspension

Question 10.
Rub a red Hibiscus flower thoroughly on both sides of a white paper. What is the colour of the paper now? Didn’t the colour of the paper change? This paper can be tested on the liquids in the Science Kit. Record your observations in the Science Diary.
Answer:
The colour of paper rubbed with hibiscus flower is pink colour.
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 6

Question 11.
Observe the change in colour when two or three drops of Phenolphthalein are added to various acids and bases. Similarly, add two or three drops of Methyl Orange in acids and bases and observe the change. Tabulate the colour change.
Answer:
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 7

Question 12.
Which substances can be used as indicators of acids?
Answer:
Litmus Paper, Methyl Orange, phenolphthalein

Question 13.
Which substances can be used as indicators of bases?
Answer:
Turmeric, Litmus Paper, Methyl Orange, phenolphthalein

Question 14.
You have now realised that acids turn blue litmus into red, and bases turn red litmus into blue. Do they have any other common properties?
Answer:
They can neutralise each other, conduct electricity, and are often corrosive. These properties make them important in a wide range of chemical reactions and practical applications.

Question 15.
Dip your fingers in each liquid in the Science Kit and rub the fingers as shown in the picture. Which liquids feel slippery? List them.
Answer:
Soap water
Clear baking soda solution Clear lime water Clear ash suspension.

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases

Question 16.
You have now identified the common properties of acids and bases. Tabulate them.
Answer:

Acids Bases
Sour taste Bitter taste
Turn blue litmus red Turn red litmus blue
React with metals to form hydrogen Slippery
React with carbonates to form carbon dioxide. Reacts with oxides and hydroxides to form water and salts.

Question 17.
Which among the following substances can turn blue litmus red? List them.

  • Orange juice
  • Rice soup
  • Black tea
  • Bilimbi (Irumban puli) juice
  • Grape juice
  • Tomato juice
  • Coconut water

Answer:
Orange juice
Black tea
Bilimbi (Irumban Puli) juice
Grape juice
Tomato juice

Question 18.
Now, let’s do experiments by diluting some acids and bases in the laboratory.
a) Which acids and bases can be taken?
b) Which indicators are to be taken?
c) Observe and tabulate the colour changes that occur when various indicators are added to them.
Answer:
a) Hydrochloric acid. Sulphuric acid, Sodium hydroxide. Potassium hydroxide
b) Red Litmus Paper, Blue Litmus Paper, Methyl Orange, phenolphthalein.
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 8

Question 19.
Fill a quarter of a test tube with vinegar (dilute acetic acid). Put three or four small strips of magnesium ribbon into it. Note down your observation. Close the mouth of the test tube with your thumb for a while. What do you feel? Which is the gas that bubbles up and pushes at your thumb?
Answer:
Bubbles are formed around the magnesium strips. If you close the mouth of the test tube with your thumb, you will feel pressure building up against your thumb. This is due to the gas being produced in the reaction. The gas that bubbles up and pushes against your thumb is hydrogen gas (H2).

Question 20.
How many general properties of acids have you identified from the experiments done so far? Record in the Science Diary.
Answer:

  • Sour taste
  • Turn blue litmus red
  • React with metals to form hydrogen
  • React with carbonates to form carbon dioxide.

Question 21.
You have understood that acids react with metals. Based on this, can you explain the reason for the following situations?

  • Metal containers are not used to store pickles.
  • Earthen vessels are commonly used to cook dishes with curd and buttermilk.

Answer:
Pickles are acidic in nature. If they are stored in metal containers, they react with metal, can cause health problems and damage pickles. So they are kept in earthen vessels, glass vessels, ceramic vessels and china clay vessels.
Earthen pots are more suitable for preparing food containing buttermilk. Buttermilk contains acid,that result in corrosion of an aluminium vessel.

What are the uses of vinegar at home?
Answer:

  • Flavour Enhancer
  • Used in pickling to preserve vegetables and fruits.
  • Used to wash fruits and vegetables to remove pesticides and bacteria.

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases

Question 22.
You already know the use of formic acid. Some acids and their uses are listed in the table below. Complete the list.
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 9
Answer:
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 10

Question 23.
Analyse the table and find out the following.
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 11
a) Which is the base used to make soap?
b) Which are the bases used in medicines?
Answer:
a) Sodium hydroxide, Potassium hydroxide
b) Aluminium hydroxide, Magnesium hydroxide

Question 24.
Add either soap solution or baking powder solution to the following substances.

  • Paper rubbed with turmeric
  • Turmeric water
  • Observe the colour change.

Answer:
On adding the soap solution or baking powder solution to the turmeric water, the yellow colour of. the turmeric water changes to red or reddish-brown.

Question 25.
Is it possible to make use of coloured parts of plants to identify acids and bases? Which are the coloured parts of plants that you know? List them.
Answer:
Red spinach, Blue coloured clitoria (Sanghupushpam), Red cabbage, Beetroot, Lavender Roots.

Question 26.
Prepare either paper strips rubbed with each of the above vegetables, their juices or the coloured liquids obtained by boiling them in water. Test them with the acids available at home. Repeat the experiment with the bases also available at home. Write down the observations.
Answer:
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 12

Acids and Bases Class 7 Notes Extra Questions and Answers

Question 1.
The substances which turn blue litmus to red are?
Answer:
Acids

Question 2.
What are indicators? Write the names of indicators used in the laboratory.
Answer:
Indicators are substances that help to identify acids and bases by changing their colour. Litmus Paper, Methyl Orange, phenolphthalein.

Question 3.
How does milk turn acidic when it becomes curd?
Answer:
Curd contains a bacteria called Lactobacillus. The lactic acid that is produced when these bacteria nourish themselves with milk, gives curd its sour taste.

Question 4.
Tabulate the list of food items and acids present in them.
Answer:

Food item Main acid present
Buttermilk Lactic acid
Curd Lactic acid
Vinegar Acetic acid
Lemon Citric acid
Tamarind Tartaric acid
Apple Malic acid
Gooseberry Ascorbic acid
Tomato Oxalic acid

Question 5.
How are alkalies useful to us?
Answer:

  • In the manufacture of soap and detergents.
  • For neutralising acids and in chemical reactions.
  • In the manufacture of fertilisers.
  • In the paper and pulp industry.
  • For water treatment.
  • In the textile industry.
  • As cleaning agents.
  • In medicine and in food processing.

Question 6.
The pickles we commonly use are acidic in nature. Are they stored in metal containers?
Answer:
Pickles are acidic in nature. If they are stored in metal containers, they react with metal can cause health problems and damage pickles. So they are kept in earthen vessels, glass vessels, ceramic vessels and china clay vessels.

Question 7.
Is an aluminium vessel or an earthen pot more suitable for preparing food containing buttermilk?
Answer:
Earthen pots are more suitable for preparing food containing buttermilk. Buttermilk contains acid,that result in corrosion of an aluminium vessel.

Question 8.
What could be the reason for the red colour appearing on clothes when the turmeric stain on them is washed with soap?
Answer:
Turmeric is a natural indicator. In the presence of alkali, it turns red colour. This is due to the basic characteristics of soap solution.

Question 9.
What precautions should we take to avoid accidents while handling chemicals?
Answer:

  • Avoid spilling on body parts
  • Don’t touch with hands
  • Don’t smell
  • Don’t taste
  • Use a dropper while taking out acid from a bottle
  • Use a holder while using a test tube

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases

Question 10.
Strong acid spills on the body can cause burns. Why?
Answer:
Strong acids can absorb water and liberate heat. They can cause bums if they get spilled on the body. The first aid is pouring cold water on the affected area for a long time.

Question 11.
The table below shows the change in the colour of blue litmus paper in different substances.

Substances Colour change of blue litmus
Lemon juice Turns red
Sugar solution No colour change
Salt solution No colour change
Tamarind water Turns red
Pure water No colour change
Buttermilk Turns red
Vinegar Turns red

A. Analyse the table and write your inference.
B. Write a natural indicator we can use instead of blue litmus.
C. Name the acids which present in the given substances that turned blue litmus red.
Answer:
A. Lemon juice, tamarind water, buttermilk, and vinegar all turn blue litmus paper red, indicating they are acidic in nature. Sugar solution, salt solution, and pure water do not change the colour of blue litmus paper, indicating they are neutral and neither acidic nor basic.
B. A natural indicator that can be used instead of blue litmus paper is red cabbage juice.
C. Lemon Juice: Contains citric acid.
Tamarind Water:Contains tartaric acid.
Buttermilk: Contains lactic acid.
Vinegar: Contains acetic acid.
These acids are responsible for the acidic nature of these substances, causing the blue litmus paper to turn red.

Question 12.
Following are the findings of some experiments with acids.
A piece of paper rubbed with hibiscus changes colour when dipped in lemon juice.
Buttermilk, vinegar, lemon juice and tamarind have a common taste.
Bubbles form when zinc is added to vinegar.
Bubbles form when acid spills on a marble floor.
A) Examine the findings and write the general properties of acids.
B) Glass containers are suitable for storing pickles. What may be the reason?
C) Complete the table.
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 13
Answer:
A) General properties of acids
Sour taste

  • Turn blue litmus red
  • React with metals to form hydrogen
  • React with carbonates to form carbon dioxide.

B) Glass containers are suitable for storing pickles because glass is non-reactive and does not react with the acids present in pickles.

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 14

Question 13.
A) Lemon juice – Citric acid
Tamarind – ………….(a)……………
Orange – Citric acid
Butter milk – ………..(b)………….
Vinegar – …………(c)………..
lime water – Calcium hydroxide
Soap solution – ………..(d)…………
Baking soda – …………(e)…………..
B) The substances which turn blue litmus to red are?
C) The substances that help to identify acids and alkalies are?
Answer:
a) Tartaric acid
b) lactic acid
c) acetic acid
d) Sodium hydroxide / Potassium hydroxide
e) Sodium bicarbonate

B) Acids

C) Indicators

Question 14.
A)Some substances have a caustic taste. Why? Write examples for such substances.
B) Why do some acids cause burns?
C) Some acids were spill on a table. How will you neutralise it?
Answer:
A) The alkaline content in these substances gives a caustic taste, e.g., soap, washing soda, lime water.

B) Some acids have the ability to absorb water and radiate heat; it is the ability that causes bums when acids fall on our skin, every cell has water content; the acid falling on the skin absorbs water from the cells and liberates heat, thereby causing serious bums.

C) To neutralize an acid, an alkali is added. Use some slaked lime as an alkali.

Question 15.
A) Find the acids and alkalies present in the following:
Tamarind, butter, orange, lemon, lime water
B) How alkalies can be distinguished by touching them?
C) The lemon piece is rubbed with a rusted iron knife to clean it; why?
Answer:
A) Tamarind-tartaric acid
Butter milk-lactic acid
Soap solution-sodium hydrochloride
Baking soda-sodium bicarbonate
Orange-citric acid
Lemon-citric acid
Lime water-calcium hydroxide

A) The aqueous solutions of alkalis have a slippery nature. So, if a solution has a slippery nature, then it can be understood that it is an alkali.
B) Lemon juice contains citric acid. Rust is an alkali. Therefore, rust and citric acid react with each other and remove the rust.

Question 16.
Balu tried to make a fire extinguisher with vinegar and magnesium ribbon. He directed the gas coming from the extinguisher towards a lighted candle. The candle flame burns with a low noise instead of extinguishing the flame.
A. Name the gas formed here.
B. Write any two features of this gas.
C. What change should be made in this experiment to work the fire extinguisher properly?
Answer:
A. The gas formed when vinegar (acetic acid) reacts with magnesium ribbon is hydrogen gas.
B. Hydrogen gas is a highly flammable and lightest element. It is colourless, odourless, and tasteless.
C. To make a fire extinguisher that works properly, Balu should use a chemical reaction that produces carbon dioxide (CO2) gas instead of hydrogen. Balu should use baking soda instead of Magnesium ribbon to produce carbon dioxide.

Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases

Question 17.
The following table shows the observation results of an experiment conducted in the class.
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 15
a) What properties do Sample -1 and Sample – 2 have?
b) Name two natural indicators that can be used in this experiment.
c) Find the odd one from the following
i) buttermilk
ii) soap water
iii) Vinegar
iv) Lime water
Answer:
a) The sample -1 indicates the presence of base.
Properties:

  • Turns to pink when phenolphthalein is added
  • Slippery
  • Red litmus turns blue
  • Has alkaline taste

The sample- 2 indicates the presence of acids Properties:

  • Sour taste
  • Turn blue litmus red
  • React with metals to form hydrogen
  • React with carbonates to form carbon dioxide.

b)
• Red cabbage juice
• Beetroot juice
c) ii) soap water

Question 18.
Some observations related to acids and alkalis are given below.
Solution -1

No change in colour while adding Phenolphthalein. The colour changed into pale pink while adding Methyl orange. The colour did not change- when the solution was added to the cloth rubbed with turmeric.

Solution – 2

Formed pink colour while adding Phenolphthalein. Formed pale yellow colour on adding Methyl orange. Formed red colour when the solution was added to the cloth rubbed with turmeric.

A) List out the chemical properties of solution I & solution 2 in the given table
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 16
B) Write down any two general properties of solution 2.
C) Find out the right pair from the following.
Automobile battery-: hydrochloric acid
Manufacturing of soap: caustic soda
Preparation of pickle: sulphuric acid
Manufacture of paint: caustic soda
Answer:
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 17
B) Slippery or Soapy Feel.
Turns Red Litmus Paper Blue
C) Manufacturing of soap: caustic soda.

Question 19.
A) The observation result of an experiment is given below. Identify the gases formed
Class 7 Basic Science Chapter 2 Question Answer Notes Acids and Bases Img 18
B) Write the methods to identify the gases produced in this chemical reaction.
C) Name any two acids used in the laboratory instead of vinegar.
Answer:
A) i) Hydrogen
ii) Carbon dioxide

B) i) Collect a small sample of the gas in a test tube and bring a lit match or splint near the mouth of the test tube. If the gas is hydrogen, then it will bum with pop sound, ii) Bubble the gas through limewater. If the gas is carbon dioxide, the limewater will turn milky.

C) Hydrochloric Acid, Sulphuric Acid

Question 20.
Observe the list of substances that are collected in the Science Corner.
• Vinegar
• Sodium Chloride
• Hydrochloric acid
• Sodium hydroxide
• Calcium hydroxide
A) Which alkali in this list is used to make soap?
B) Which of the following containers would you choose for making soap? a) Steel Bucket b) Plastic Bucket.
Give a reason for choosing these containers.
Answer:
A) Sodium Hydroxide

B) Steel bucket
Steel does not react with sodium hydroxide

C) Sodium Silicate helps in the hardening of the soap.
Stone Powder acts as fdler(increases the volume) in soap.

Acids and Bases Class 7 Notes

  • Science Kit is a collection of materials that are used to conduct science experiments.
  • Indicators are substances that help to identify acids and bases by changing their colour. Litmus paper is an indicator.
  • All food items with a sour taste have acids in them.
  • Hydrochloric acid, Nitric acid, Sulphuric acid, and Acetic acid are some of the strong acids used in the laboratory.
  • Calcium hydroxide (Lime), Sodium hydroxide (Caustic soda), and Potassium hydroxide (Caustic potash) are some of the strong bases used in the laboratory.
  • A large amount of heat is liberated when caustic soda dissolves in water during the preparation of soap.
  • Add sodium silicate and stone powder one by one to increase the hardness and quantity of the soap.
  • Colour and perfume can be added to the soap to make it more attractive and fragrant.
  • Turmeric is a natural indicator. In the presence of alkali it turns red colour.

यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus

Practicing with SCERT Kerala Syllabus 7th Standard Hindi Textbook Solutions Unit 2 Chapter 2 यह धरती है उस किसान की Yah Dharti Hai Us Kisan Ki Questions and Answers Notes improves language skills.

Class 7 Hindi Yah Dharti Hai Us Kisan Ki Question Answer

Yah Dharti Hai Us Kisan Ki Question Answer Class 7

SCERT Class 7 Hindi Unit 2 Chapter 2 Question Answer Kerala Syllabus यह धरती है उस किसान की

प्रश्न 1.
‘खून चाटती वायु से आपने क्या समझा ?
“രക്തം വറ്റിക്കുന്ന കാറ്റ് കൊണ്ട് നിങ്ങൾ എന്താണ് മനസ്സിലാക്കിയത്?
उत्तर:
‘खून चाटती वायु’ से मतलब है वह कठोर और तपती हुई हवा जो खेत में काम करते समय किसान को बहुत परेशान करती है और उसके शरीर को चोटिल कर देती है। यह हवा इतनी कठोर होती है कि ऐसा लगता है जैसे वह किसान का खून चूस रही हो ।

“രക്തം വറ്റിക്കുന്ന കാറ്റ്’ എന്നാൽ വയലിൽ ജോലി ചെയ്യുമ്പോൾ കർഷകനെ വളരെ യധികം ബുദ്ധിമുട്ടിക്കുകയും ശരീരത്തിന് പരിക്കേൽപ്പിക്കുകയും ചെയ്യുന്ന കഠിനവും ചൂടുള്ളതുമായ കാറ്റ് അർത്ഥമാക്കുന്നു. ഈ കാറ്റ് കർഷകന്റെ രക്തം വലിച്ചെടുക്കുക യാണെന്ന് തോന്നിപ്പിക്കുംവിധം കഠിനമാണ്.

प्रश्न 2.
ढेरों अन्न उपजाने के लिए किसान को किन- किनका सामना करना पड़ता है?
ധാരാളം ഭക്ഷണം ഉൽപ്പാദിപ്പിക്കുന്നതിന് ഒരു കർഷകന് എന്ത് വെല്ലുവിളികൾ നേരിടേണ്ടിവരും?
उत्तर:
ढेरों अन्न उपजाने के लिए किसान को अनेक कठिनाइयों का सामना करना पड़ता है।
ധാരാളം ഭക്ഷണം വിളയിക്കാൻ, കർഷകന് മഴയും വെയിലും കഠിനമായ കാറ്റും കഠിനാധ്വാനവും നിരവധി ബുദ്ധിമുട്ടുകളും നേരിടേണ്ടിവരും.

यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus

प्रश्न 3.
किसान को ‘मिट्टी का पूर्ण पारखी’ क्यों कहा
എന്തുകൊണ്ടാണ് കർഷകനെ “മണ്ണിൻറെ ഉപജ്ഞാതാവ്’ എന്ന് വിളിച്ചത്?
उत्तर:
किसान को ‘मिट्टी का पूर्ण पारखी’ इसलिए कहा गया है क्योंकि वह मिट्टी की गुणवत्ता, उसकी जरूरतें, और उसके साथ कैसे काम करना है, यह सब अच्छी तरह से जानता है। वह मिट्टी के साथ तपकर, गलकर और अपने जीवन को खपाकर फसल उगाता है।
മണ്ണിന്റെ ഗുണമേന്മ, അതിന്റെ ആവശ്യങ്ങൾ, എങ്ങനെ പ്രവർത്തിക്കണം എന്നിവയെ ക്കുറിച്ച് നന്നായി അറിയാവുന്നതിനാൽ കർ ഷകനെ “മണ്ണിന്റെ ഉപജ്ഞാതാവ്’ എന്ന് വിളിക്കുന്നു. മണ്ണിൽ അധ്വാനിച്ചും ഉരുകിയും ജീവിതം സമർപ്പിച്ചും അവൻ വിളകൾ വളർത്തുന്നു.

प्रश्न 4.
‘तन की खाद मिलाना’ का मतलब क्या है?
“ശരീരത്തിന്റെ വളം ചേർത്ത്’ എന്നതിന്റെ അർത്ഥമെന്താണ്?
उत्तर:
‘तन की खाद मिलाना का मतलब है किसान का अपनी मेहनत और पसीने को मिट्टी में मिलाना ताकि वह उपजाऊ बने और फसल उगा सके। यह किसान के समर्पण और कठिन परिश्रम का प्रतीक है, जिसमें वह अपना सब कुछ मिट्टी को समर्पित कर देता है।
“ശരീരത്തിന്റെ വളം ചേർത്ത്’ എന്നാൽ കർ ഷകന്റെ അധ്വാനവും വിയർപ്പും മണ്ണിൽ കലർത്തി അത് ഫലഭൂയിഷ്ഠമാവുകയും വിളകൾ വളർത്തുകയും ചെയ്യുക എന്നതാണ്. മണ്ണിന് എല്ലാം നൽകുന്ന കർഷകന്റെ അർപ്പണബോധത്തെയും കഠിനാധ്വാനത്തെയും ഇത് പ്രതീകപ്പെടുത്തുന്നു.

प्रश्न 5.
खेती से संबंध रखनेवाले शब्द कविता से पहचानकर लिखें :
കവിതയിൽ നിന്ന് കൃഷിയുമായി ബന്ധ പ്പെട്ട വാക്കുകൾ തിരിച്ചറിഞ്ഞ് എഴുതുക.

  • जैसे
  • बीज
  • _____________
  • _____________

उत्तर:

  • जैसे
  • बीज
  • जुआ
  • बैलों
  • मिट्टी
  • खेत
  • फसल
  • अन्न
  • खाद

ചൂതാട്ടം
വിത്ത്
കാളകൾ
മണ്ണ്
കൃഷിഭൂമി
വിള
ധാന്യം
വളം

यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus

प्रश्न 6.
किसान अपनी जिंदगी कैसे व्यतीत करता है? कविता के आधार पर पूर्ति करें:
यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus 1
उत्तर:
किसान

  • किसान वर्षा और धूप में काम करता है।
  • किसान अपने बैलों के कंधों पर भाग्य का जुआ रखता है।
  • किसान खून चाटती हुई वायु में पैनी कुसी से खेत जोतता है।
  • किसान मिट्टी का मर्म समझता है।
  • किसान वर्षा और धुप में काम कर्ता है |
  • किसान अपने बैलों के कंधों पर भाग्य का जुआ रखता है।
  • किसान खून चाटती हुई वायु में पैनी कुसी से खेत जोतता है।
  • किसान मिट्टी का मर्म समझता है |
  • किसान नए वर्ष में नई फसल के लिए बीज बोता है।
  • किसान मिट्टी के संग तपकर, गलकर, और मरकर अपना जीवन खपाता है।
  • किसान अपने तन की खाद को मिट्टी में मिलाकर उसे जीवित रखता है।
  • किसान मिट्टी में सोने का सपना देखता है और उसकी महिमा गाता है।

കർഷകർ മഴയിലും വെയിലിലും ജോലി ചെയ്യുന്നു.
കർഷകൻ തന്റെ കാളകളുടെ തോളിൽ വിധിയുടെ നുകം വെക്കുന്നു.
രക്തം കുടിക്കുന്ന വായുവിൽ മൂർച്ച യുള്ള വെട്ടുകത്തി ഉപയോഗിച്ച് കർഷ കൻ പാടം ഉഴുതുമറിക്കുന്നു.
കർഷകൻ മണ്ണിന്റെ സത്ത മനസ്സി ലാക്കുന്നു.
കർഷകൻ പുതുവർഷത്തിൽ ഒരു പുതിയ വിളവിനായി വിത്ത് പാകുന്നു. മണ്ണിനൊപ്പം എരിഞ്ഞും ഉരുകിയും മരിച്ചും കർഷകൻ തന്റെ ജീവിതം ചെലവഴിക്കുന്നു.
കർഷകൻ ചാണകം മണ്ണിൽ കലർത്തി മണ്ണിനെ ജീവനോടെ നില നിർത്തുന്നു. കർഷകൻ മണ്ണിൽ സ്വർണ്ണം സ്വപ്നം കാണുകയും അതിന്റെ മഹത്വം പാടു കയും ചെയ്യുന്നു.

प्रश्न 7.
कविता से निम्नलिखित आशयवाली पंक्तियाँ चुनकर लिखें:
കവിതയിൽ നിന്ന് ഇനിപ്പറയുന്ന വരികൾ തിരഞ്ഞെടുത്ത് എഴുതുക.

किसान अपनी ज़िन्दगी व्यतीत करके खेत में समृद्धि का स्वप्न देखता है |
കൃഷിക്കാരൻ തന്റെ വയലുകളിൽ സമൃദ്ധി സ്വപ്നം കണ്ടു ജീവിതം ചെലവഴിക്കുന്നു.

किसान कड़ी मेहनत से खेत को सदा उर्वर बनाता है और स्वयं जीवित रहता है|
കർഷകൻ എപ്പോഴും കഠിനാധ്വാനത്തി ലൂടെ വയലിനെ ഫലഭൂയിഷ്ഠമാക്കുകയും സ്വയം അതിജീവിക്കുകയും ചെയ്യുന്നു.
उत्तर:
किसान अपनी ज़िन्दगी व्यतीत करके खेत में समृद्धि का स्वप्न देखता है |
“देख रहा है मिट्टी में सोने का सपना,
मिट्टी की महिमा गाता है, ”
किसान कड़ी मेहनत से खेत को सदा उर्वर बनाता है और स्वयं जीवित रहता है |

पैनी कुसी खेत के भीतर,
दूर कलेजे तक ले जा कर,
जोत डालता है मिट्टी को,
पांस डाल कर,

और बीज फिर बो देता है
नये वर्ष में नयी फसल के
ढेर अन्न का लग जाता है।
अपने तन की खाद मिला कर,
मिट्टी को जीवित रखता है;
खुद जीता है।

प्रश्न 8.
पढ़े, समझें और लिखें:
इन प्रयोगों पर ध्यान दें :

  • जागर
  • बरसाकर
  • गरजकर
  • डूबकर
  • तपकर
  • मरकर

ऊपर दिए गए शब्दों से नए वाक्य बनाकर लिखें:
जैसे:- मैं मैदान में जाकर खेलता हूँ ।
__________________________
__________________________
__________________________
__________________________
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उत्तर:

  • बादल ने बारिश बरसाकर हमें भिगो दिया।
  • बादल गरजकर हमें डराते हैं।
  • सूरज शाम को डूबकर छिप जाता है।
  • धूप में तपकर हम पसीने से भीग जाते हैं।
  • वह अपने सपनों को पूरा करते हु मरकर अमर हो गया।

മേഘം മഴ പെയ്യിച്ച് ഞങ്ങളെ നനച്ചു.
ഇടിമുഴക്കമുള്ള മേഘങ്ങൾ നമ്മെ ഭയപ്പെടുത്തുന്നു.
വൈകുന്നേരങ്ങളിൽ സൂര്യൻ അസ്തമിക്കുകയും മറയുകയും ചെയ്യുന്നു.
വെയിലിന്റെ ചൂടിൽ നമ്മൾ വിയർത്ത് കുളിക്കും
തൻ്റെ സ്വപ്നങ്ങൾ സാക്ഷാത്കരിച്ച് മരണത്തിലും അവൻ അനശ്വരനായി.

यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus

प्रश्न 9.
कविता की आस्वादन टिप्पणी लिखें:-
കവിതയുടെ ആസ്വാദന കുറിപ്പ് എഴുതുക.
उत्तर:
केदारनाथ अग्रवाल हिन्दी साहित्य के प्रमुख कवि थे, जिन्होंने अपनी कविताओं में ग्रामीण जीवन और किसानों की कठिनाइयों को प्रमुखता से स्थान दिया। उनकी कविता “यह धरती है उस किसान की” में किसानों की मेहनत और संघर्ष को अद्वितीय तरीके से प्रस्तुत किया गया है।

कविता “यह धरती है उस किसान की” में कवि ने किसान की मेहनत और संघर्ष को बहुत प्रभावी रूप में प्रस्तुत किया है। किसान अपने बैलों के साथ वर्षा और धूप में भी खेत जोतता है और बीज बोता है। उसकी मेहनत से नयी फसल उगती है और ढेर सारा अन्न प्राप्त होता है । कवि ने बताया है कि धरती न किसी राजा की है और न ही किसी गरीब की, बल्कि केवल किसान की है। किसान मिट्टी का पारखी होता है और अपने जीवन को तपकर, गलकर, और मरकर भी मिट्टी को उपजाऊ बनाता है। कविता में तुकांत शब्दों का बहुत सुंदर प्रयोग हुआ है, जैसे; तपकर गलकर, अपना-सपना, गाता – जीता | इस प्रकार, यह कविता किसानों के प्रति सम्मान और कृतज्ञता को प्रकट करत है।

ഹിന്ദി സാഹിത്യത്തിലെ ഒരു പ്രമുഖ കവി യായിരുന്നു കേദാർനാഥ് അഗർവാൾ, അദ്ദേഹം തന്റെ കവിതകളിൽ ഗ്രാമീണ ജീവിതത്തിനും കർഷകരുടെ ബുദ്ധിമുട്ടു കൾക്കും പ്രാധാന്യം mod. അദ്ദേഹ ത്തിന്റെ “യേ ധർത്തി ഹേ ഉസ് കിസാൻ കി എന്ന കവിതയിൽ കർഷകരുടെ കഠിനാധ്വാ നവും പോരാട്ടവും അതുല്യമായ രീതിയിൽ അവതരിപ്പിച്ചിരിക്കുന്നു.

‘यह धरती है उस किसान की’ എന്ന കവിതയിൽ കർഷകന്റെ കഠിനാധ്വാനവും സമരവും വളരെ ഫലപ്രദമായി കവി അവ തരിപ്പിച്ചിരിക്കുന്നു. കർഷകൻ തന്റെ കാള കളെ കൊണ്ട് പാടം ഉഴുതു മറിക്കുകയും മഴയും വെയിലുമേറ്റ് വിത്ത് വിതയ്ക്ക കയും ചെയ്യുന്നു. അവന്റെ കഠിനാധ്വാനം മൂലം ഒരു പുതിയ വിള വിളയുകയും ധാരാളം ഭക്ഷണം ലഭിക്കുകയും ചെയ്യുന്നു. ഭൂമി ഒരു രാജാവിനോ ദരിദ്രനോ അവകാശ പ്പെട്ടതല്ല, കർഷകന്റേത് മാത്രമാണെന്ന് കവി പറഞ്ഞിട്ടുണ്ട്. കർഷകൻ മണ്ണിന്റെ ഉപ ജ്ഞാതാവാണ്, തന്റെ ജീവിതം അദ്ധ്വാ നിച്ചും ഉരുകിയും മരിക്കുമ്പോഴും ചെലവഴി ച്ചുകൊണ്ട് മണ്ണിനെ ഫലഭൂയിഷ്ഠമാക്കുന്നു. കവിതയിൽ പ്രാസമുള്ള വാക്കുകളുടെ മനോഹരമായ പ്രയോഗമുണ്ട്, अपना-सपना, गाता – जीता അങ്ങനെ കർഷകരോടുള്ള ആദരവും നന്ദിയും ഈ കവിത പ്രകടിപ്പിക്കുന്നു.

तुकांत शब्द क्या है?
तुकांत शब्द ऐसे दो शब्दों को कहाँ जाता है जिन दो शब्दों के अंत का वर्ण सामान हो, जैसे सीता-गीता। इन दोनों शब्दों सीता और गीता का अंतिम वर्ण (अक्षर) ‘ता’ है जो कि दोनों में सामान है इसलिए इन दोनों शब्दों को तुकांत शब्द कहा जाएगा।

उदाहरण:- आर-पार, खाना-पीना, सीता-गीता, नटखट, धन-वन आदि (etc)|

സീതഗീത പോലെയുള്ള അവസാന അക്ഷരങ്ങൾ ഒരേ പോലെയുള്ള രണ്ട് വാക്കുകളെയാണ് റൈമിംഗ് വാക്ക് (Rhyming words) സൂചിപ്പിക്കുന്നത്. സീത, ഗീത എന്നീ രണ്ട് വാക്കുകളുടെയും അവസാന അക്ഷരം ‘0’ ആണ്, ഇത് രണ്ടിലും സമാനമാണ്, അതിനാൽ ഈ രണ്ട് പദങ്ങളെയും വാക്കുകൾ तुकांत शब्द /Rhyming words എന്ന് വിളിക്കും.

टिप्पणी परखें और बॉक्स में हाँ या नहीं लिखें।
അഭിപ്രായം പരിശോധിച്ച് ബോക്സിൽ അതെ അല്ലെങ്കിൽ ഇല്ല എന്ന് എഴുതുക.
यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus 2
उत्तर:

कवि का परिचय है |
കവിയുടെ ആമുഖം
कविता का परिचय है ।
കവിതയുടെ ആമുഖം.
कविता का आशय है |
കവിതയുടെ അർത്ഥം.
कविता की विशेषताओं का उल्लेख हैं । (जैसे तुकांत शब्द …)
കവിതയുടെ സവിശേഷതകൾ പരാമർശിക്കുന്നു
अपना मत लिखना है ।
നിങ്ങളുടെ അഭിപ്രായം എഴുതണം.

प्रश्न 10.
कृषक दिवस पर आपके विद्यालय में जत्था निकाला जा रहा है। प्लकार्ड के लिए संदेश
यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus 3
उत्तर:
यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus 4

प्रश्न 11.
सफलता के लिए परिश्रम की आवश्यकता है। निम्नलिखित बिंदुओं पर चर्चा करें और लेख लिखें |
വിജയത്തിന് കഠിനാധ്വാനം ആവശ്യമാണ്. ഇനിപ്പറയുന്ന പോയിന്റുകൾ ചർച്ച ചെയ്ത് ഒരു ലേഖനം എഴുതുക.

  • जीवन में सफलता प्राप्त करना ।
  • हार-थकान का सामना करना |
  • संघर्ष भरे जीवन में आगे बढ़ते जाना |
  • परिश्रम का महत्त्व पहचानना
  • समाज और देश के विकास में परिश्रम का योगदान

ജീവിതത്തിൽ വിജയം കൈവരിക്കാൻ.
പരാജയവും ക്ഷീണവും നേരിടുന്നു.
പോരാട്ടം നിറഞ്ഞ ജീവിതത്തിൽ മുന്നേറുക.
കഠിനാധ്വാനത്തിന്റെ പ്രാധാന്യം തിരിച്ച റിയൽ.
സമൂഹത്തിന്റെയും രാജ്യത്തിന്റെയും വികസനത്തിൽ കഠിനാധ്വാനത്തിന്റെ സംഭാവന
यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus 5
उत्तर:
परिश्रमः सफलता की कुंजी
सफलता प्राप्त करने के लिए परिश्रम की आवश्यकता है। परिश्रम से हम जीवन में उच्चाईयों तक पहुँच सकते हैं। जीवन में हमेशा कई चुनौतियों का सामना करना पड़ता है, लेकिन हार – थकान से हार नहीं माननी चाहिए। इन संघर्षों से हम सीखते हैं और आगे बढ़ते हैं। परिश्रम से हमें अपने लक्ष्यों तक पहुँचने में मदद मिलती है। समाज और देश के विकास में भी परिश्रम का बड़ा योगदान होता है। इसलिए, हर क्षेत्र में परिश्रम का महत्त्व पहचानना जरूरी है।

കഠിനാധ്വാനം: വിജയത്തിന്റെ താക്കോൽ വിജയം കൈവരിക്കാൻ കഠിനാധ്വാനം ആവ ശ്യമാണ്. കഠിനാധ്വാനത്തിലൂടെ ജീവിത ത്തിൽ ഉയരങ്ങളിലെത്താം. ജീവിതത്തിൽ എപ്പോഴും ഒരുപാട് വെല്ലുവിളികൾ നേരി ടേണ്ടി വരും, എന്നാൽ തോൽവിയും ക്ഷീണവും കാരണം തളരരുത്. ഈ പോരാട്ടങ്ങളിൽ നിന്ന് നമ്മൾ പഠിക്കുകയും മുന്നോട്ട് പോകു കയും ചെയ്യുന്നു. കഠിനാധ്വാനം നമ്മുടെ ലക്ഷ്യത്തിലെത്താൻ സഹായിക്കുന്നു. സമൂ ഹത്തിന്റെയും രാജ്യത്തിന്റെയും വികസന ത്തിൽ കഠിനാധ്വാനത്തിനും വലിയ പങ്കുണ്ട്. അതിനാൽ, എല്ലാ മേഖലയിലും കഠിനാ ധ്വാനത്തിന്റെ പ്രാധാന്യം തിരിച്ചറിയേണ്ടത് പ്രധാനമാണ്.

लेख के लिए उचित शीर्षक लिखा है।
ലേഖനത്തിന് ഉചിതമായ തലക്കെട്ട് എഴുതിയിട്ടുണ്ട്.
संकेतों का विक्सित किया है ।
പോയിന്റുകൾ വികസിപ്പിച്ചെടുത്തിട്ടുണ്ട്.
भूमिका और उपसंहार है ।
ആമുഖവും ഉപസംഹാരവും ഉണ്ടായിരിക്കുക.
आशय स्पष्ट है।
ഉദ്ദേശം വ്യക്തമാണ്.
उचित भाषा का प्रयोग किया है ।
ഉചിതമായ ഭാഷ ഉപയോഗിച്ചിരിക്കുന്നു.

प्रश्न 12.
यह धरती है उस किसान की किसकी कविता है?
उत्तर:
केदारनाथ अग्रवाल

यह धरती है उस किसान की Questions and Answers Notes Class 7 Hindi Kerala Syllabus

प्रश्न 13.
किसान की महिमा क्या है?
उत्तर:
किसान की महिमा यह है कि वह अपनी मेहनत से मिट्टी को जीवित रखता है और नए- नए फसलों का उत्पादन कर रहा है जिससे समाज को भोजन मिल सके।

प्रश्न 14.
कवि ने धरती को किसान की धरती क्यों कहा है?
എന്തുകൊണ്ടാണ് കവി ഭൂമിയെ കർഷകന്റെ നാട് എന്ന് വിളിച്ചത്?
उत्तर:
किसान धरती पर अथक परिश्रम करता है।
കർഷകൻ വിശ്രമമില്ലാതെ ഭൂമിയിൽ അധ്വാനിക്കുന്നു.

प्रश्न 15.
रिक्त स्थान पूर्ती करें:-
വിട്ടുപോയ ഭാഗങ്ങൾ പൂരിപ്പിക്കുക:

खेती का काम करने वाला व्यक्ति को ________ कहा जाता है|
किसान एक जोड़ी ________ से अपनी ज़मीन जोतता है।
________ किसान दिन-रात काम करता है ताकि हमें अनाज मिल सके।
परिश्रमी किसान हर साल ________ बोता है और फसलों की देखभाल करता है।
(नए – बीज, किसान, परिश्रमी, बैलों)
उत्तर:
खेती का काम करने वाला व्यक्ति को किसान कहा जाता है|
किसान एक जोड़ी बैलों से अपनी ज़मीन जोतता है।
परिश्रमी किसान दिन-रात काम करता है ताकि हमें अनाज मिल सके।
परिश्रमी किसान हर साल नए बीज बोता है और फसलों की देखभाल करता है।

കാർഷിക ജോലി ചെയ്യുന്ന വ്യക്തിയെ കർഷകൻ എന്ന് വിളിക്കുന്നു.
ഒരു ജോടി കാളകളെ ഉപയോഗിച്ച് ഒരു കർഷകൻ തന്റെ നിലം ഉഴുതുമറിക്കുന്നു.
കഠിനാധ്വാനിയായ കർഷകൻ രാവും പകലും അധ്വാനിക്കുന്നതിനാൽ നമുക്ക് ഭക്ഷ്യധാന്യങ്ങൾ ലഭിക്കും.
കഠിനാധ്വാനിയായ ഒരു കർഷകൻ എല്ലാ വർഷവും പുതിയ വിത്ത് വിത യ്ക്കുകയും വിളകൾ പരിപാലിക്കുകയും ചെയ്യുന്നു.
വിപരീതപദങ്ങൾ എഴുതുക.

प्रश्न 16.
विलोम शब्द लिखिए :-
വിപരീതപദങ്ങൾ എഴുതുക.
परिश्रम, धरती
(കഠിനാധ്വാനം, ഭൂമി)
उत्तर:

  • परिश्रम – विश्राम
  • धरती- गगन

प्रश्न 17.
निम्नलिखित शब्दों के पर्यायवाची लिखें:
ഇനിപ്പറയുന്ന വാക്കുകളുടെ പര്യായങ്ങൾ എഴുതുക:
मिट्टी, किसान, धरती
(മണ്ണ്, കർഷകൻ, ഭൂമി)
उत्तर:

  • मिट्टी- माटी, मृतिका
  • किसान-कृषक, भूमिपुत्र
  • धरती- धरा, भूमि