Greenhouse Effect and Global Warming MCQs
Greenhouse Effect and Global Warming MCQs Class 8
Class: CBSE Class 8
Subject: Science
Section: 18 – Pollution of Air and Water
Topic: Greenhouse Effect and Global Warming MCQs
Subject: Science
Section: 18 – Pollution of Air and Water
Topic: Greenhouse Effect and Global Warming MCQs
Strictly Based on NCERT Syllabus | Ideal for CBSE Board Examinations
1. Greenhouse effect is the warming of Earth due to:
Answer: B. Greenhouse gases
Explanation: Gases like CO₂ trap heat in the atmosphere, warming Earth.
Explanation: Gases like CO₂ trap heat in the atmosphere, warming Earth.
2. Main greenhouse gas:
Answer: B. Carbon dioxide
Explanation: CO₂ is released by burning fossil fuels.
Explanation: CO₂ is released by burning fossil fuels.
3. Global warming means:
Answer: B. Heating Earth
4. Fossil fuel burning releases:
Answer: A. CO₂
5. Gas causing ozone depletion:
Answer: B. CFCs
6. Global warming causes:
Answer: D. All
7. Methane is produced by:
Answer: B. Cattle
Explanation: Digestion in ruminants releases methane.
Explanation: Digestion in ruminants releases methane.
8. Greenhouse effect is necessary to:
Answer: B. Support life
Explanation: It keeps Earth warm enough for living organisms.
Explanation: It keeps Earth warm enough for living organisms.
9. Excess greenhouse effect leads to:
Answer: B. Global warming
10. Deforestation increases:
Answer: B. CO₂
11. Polar ice melting causes:
Answer: A. Sea rise
12. Renewable energy reduces:
Answer: D. All
13. Example renewable source:
Answer: B. Solar
14. Kyoto Protocol deals with:
Answer: B. Climate
15. Global warming affects:
Answer: D. All
16. Major heat trapping layer:
Answer: A. Troposphere
17. Planting trees reduces:
Answer: A. CO₂
18. Climate change leads to:
Answer: D. All
19. Alternative fuel:
Answer: A. CNG
20. Controlling global warming needs:
Answer: D. All
Explanation: Combined global efforts are required.
Explanation: Combined global efforts are required.
