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1. Which of the following is a traditional water harvesting method in Rajasthan?
A. Firki
B. Bawadi
C. Windmill
D. Well
2. What is the main purpose of a windmill?
A. To cool the air
B. To generate electricity
C. To pump water
D. To run vehicles
3. Which gas is required for burning?
A. Nitrogen
B. Oxygen
C. Carbon dioxide
D. Argon
4. What is the main cause of air pollution from vehicles?
A. Water
B. Fossil fuels
C. Solar energy
D. Wind energy
5. What is the primary use of coal?
A. Generating electricity
B. Building houses
C. Cleaning water
D. Cooling air
6. What does rainwater harvesting help conserve?
A. Soil
B. Fossil fuels
C. Water
D. Air
7. Which form of energy do plants use to make their food?
A. Wind energy
B. Solar energy
C. Electrical energy
D. Fossil fuel
8. What is the major cause of deforestation?
A. Overgrazing
B. Industrialization
C. Planting more trees
D. Solar farming
9. Which of the following resources is replenished by nature?
A. Solar energy
B. Petroleum
C. Natural gas
D. Coal
10. What gas do we exhale during respiration?
A. Nitrogen
B. Carbon dioxide
C. Oxygen
D. Argon
11. What is a major use of water besides drinking?
A. Burning fossil fuels
B. Growing plants
C. Making solar panels
D. Generating wind energy
12. What is the natural source of light and heat for Earth?
A. Moon
B. Stars
C. Sun
D. Fire
13. Which of the following is a renewable source of energy?
A. Petrol
B. Wind
C. Coal
D. Diesel
14. What happens when fossil fuels are burned?
A. They cool the environment
B. They produce electricity
C. They release smoke and carbon dioxide
D. They purify water
15. How does deforestation affect the environment?
A. Improves soil quality
B. Causes soil erosion
C. Reduces rainfall
D. Both b and c
16. Which of the following is a major contributor to air pollution?
A. Solar energy
B. Wind energy
C. Fossil fuels
D. Rainwater harvesting
17. Why is it important to conserve water?
A. It is renewable
B. It is non-renewable
C. Freshwater is limited
D. It is found in abundance
18. What is the role of earthworms in the soil?
A. Degrade plastic waste
B. Help in turning and loosening the soil
C. Generate electricity
D. Absorb fossil fuels
19. Which movement involved people hugging trees to prevent deforestation?
A. Swadeshi Movement
B. Chipko Movement
C. Green Revolution
D. Dandi March
20. What natural process enriches soil with nutrients?
A. Erosion
B. Decomposition of leaves
C. Mining
D. Construction
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