Question Paper
Class / Subject: Class 3 (SSC) · EVS भाग 1 - विज्ञान (परिसर अभ्यास)
Chapter: Chapter 6 — Chapter 6: Our Need for Air
Time Allowed: 32 minutes
Max Marks: 16
1. Why do we need air? [1]
(A) To breathe and get oxygen
(B) To see better
(C) To hear better
(D) To taste better
2. What gas in air do we need to stay alive? [1]
(A) Oxygen
(B) Carbon dioxide only
(C) Nitrogen only
(D) Smoke
3. Can we see air? [1]
(A) No
(B) Yes, always
(C) Only at night
(D) Only in winter
4. What helps plants grow along with air? [1]
(A) Photosynthesis
(B) Nothing
(C) Only darkness
(D) Only cold
5. What causes air pollution? [1]
(A) Smoke, dust, vehicle emissions
(B) Clean water
(C) Fresh flowers
(D) Sunlight
6. What can polluted air cause? [1]
(A) Sickness
(B) Better health
(C) Nothing bad
(D) Only good effects
7. How can we keep air clean? [1]
(A) Planting trees
(B) Burning more waste
(C) Using more polluting vehicles
(D) Ignoring pollution
8. Why learn about our need for air? [1]
(A) To understand its importance and keep it clean
(B) No reason
(C) It's not useful
(D) Only for tests
9. Why do we need air? [1]
(A) To breathe and get oxygen
(B) To see better
(C) To hear better
(D) To taste better
10. What gas in air do we need to stay alive? [1]
(A) Oxygen
(B) Carbon dioxide only
(C) Nitrogen only
(D) Smoke
11. Can we see air? [1]
(A) No
(B) Yes, always
(C) Only at night
(D) Only in winter
12. What helps plants grow along with air? [1]
(A) Photosynthesis
(B) Nothing
(C) Only darkness
(D) Only cold
13. What causes air pollution? [1]
(A) Smoke, dust, vehicle emissions
(B) Clean water
(C) Fresh flowers
(D) Sunlight
14. What can polluted air cause? [1]
(A) Sickness
(B) Better health
(C) Nothing bad
(D) Only good effects
15. How can we keep air clean? [1]
(A) Planting trees
(B) Burning more waste
(C) Using more polluting vehicles
(D) Ignoring pollution
16. Why learn about our need for air? [1]
(A) To understand its importance and keep it clean
(B) No reason
(C) It's not useful
(D) Only for tests