Natural Resources Class 9 MCQs with Answers (NCERT)
Natural Resources Class 9 MCQs with Answers & Explanations (NCERT)
Class: 9
Subject: Science
Section: Biology
Topic: Natural Resources
Board: CBSE (Based on NCERT Syllabus)
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 9 Science examination standard.
Subject: Science
Section: Biology
Topic: Natural Resources
Board: CBSE (Based on NCERT Syllabus)
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 9 Science examination standard.
1. The outermost layer of Earth where life exists is called:
Answer: C
Explanation: Biosphere is the life-supporting zone where land, water, and air interact.
Explanation: Biosphere is the life-supporting zone where land, water, and air interact.
2. Major component of air is:
Answer: B
Explanation: Nitrogen forms about 78% of the atmosphere.
Explanation: Nitrogen forms about 78% of the atmosphere.
3. Ozone layer protects us from:
Answer: B
Explanation: Ozone absorbs harmful UV radiation from the Sun.
Explanation: Ozone absorbs harmful UV radiation from the Sun.
4. Water cycle involves:
Answer: C
Explanation: Includes evaporation, condensation, and rainfall.
Explanation: Includes evaporation, condensation, and rainfall.
5. Soil formation depends on:
Answer: D
Explanation: Multiple environmental factors form soil.
Explanation: Multiple environmental factors form soil.
6. Greenhouse gas mainly responsible for warming:
Answer: C
Explanation: CO₂ traps heat causing greenhouse effect.
Explanation: CO₂ traps heat causing greenhouse effect.
7. Process by which plants release water vapour:
Answer: B
Explanation: Water vapour exits through stomata.
Explanation: Water vapour exits through stomata.
8. Acid rain is caused by:
Answer: B
Explanation: Sulphur & nitrogen oxides form acids in rainwater.
Explanation: Sulphur & nitrogen oxides form acids in rainwater.
9. Potable water means:
Answer: C
Explanation: Safe and clean for drinking.
Explanation: Safe and clean for drinking.
10. Main source of energy for Earth:
Answer: B
Explanation: Drives climate, water cycle, photosynthesis.
Explanation: Drives climate, water cycle, photosynthesis.
11. Atmosphere layer for weather:
Answer: B
12. Nitrogen fixation done by:
Answer: B
13. Deforestation leads to:
Answer: B
14. Water present underground:
Answer: B
15. Top fertile soil layer:
Answer: B
16. Wind energy is:
Answer: B
17. Major freshwater source:
Answer: B
18. Soil erosion prevented by:
Answer: B
19. Greenhouse effect causes:
Answer: B
20. Sustainable development means:
Answer: C — Meets present needs without harming future.