35 Most Important Questions with Answers on Chapter Environmental Chemistry Class 11 CBSE, CHSE
Find your Answers Below
I. Atmosphere & Air Pollution
1. Define Environmental Chemistry.
2. What are the four major segments of the atmosphere?
3. What is the composition of the troposphere?
4. Differentiate between a pollutant and a contaminant.
5. What is the source and harmful effect of SO2 in the atmosphere?
6. Explain the formation and effects of Acid Rain.
7. How is Classical Smog (London Smog) different from Photochemical Smog (Los Angeles Smog)?
8. What is the main cause of the depletion of the Ozone Layer?
9. Write the chemical reaction showing the breakdown of ozone by a chlorine radical. C
10. What are the harmful effects of Ozone layer depletion?
II. Water Pollution & Soil Pollution
11. Define Biochemical Oxygen Demand (BOD).
12. What is the consequence of a high concentration of nitrates in drinking water?
13. What is Eutrophication?
14. Mention two major sources of heavy metal pollution in water bodies.
15. Name two major contaminants responsible for soil pollution.
III. Global Environmental Issues
16. What is the Greenhouse Effect?
17. Name the four most important Greenhouse Gases.
18. How does deforestation contribute to Global Warming?
19. Define the term 'Green Chemistry'.
20. State two principles of Green Chemistry related to waste and safety.
IV. Miscellaneous & Control
21. What is the role of catalytic converters in controlling vehicular pollution?
22. What are biodegradable and non-biodegradable wastes?
23. Name two alternative refrigerants that can replace CFCs.
24. Write two harmful effects of CO(Carbon Monoxide).
25. Why is the Stratosphere important for life on Earth?
Environmental Chemistry: Long Question Q&A (5-7 Marks)
1. Explain the causes, harmful effects, and remedial measures for Acid Rain.
2. Discuss the phenomenon of Ozone Layer Depletion, including the role of CFCs and its consequences.
3. Differentiate clearly between Classical Smog and Photochemical Smog based on their nature, formation, and components.
4.Explain the concept of Biochemical Oxygen Demand (BOD) and how it helps in classifying the quality of a water sample.
5. Describe the phenomenon of Eutrophication and its environmental impact on aquatic ecosystems.
What are the major categories of Greenhouse Gases? Explain how the Greenhouse Effect leads to Global Warming.
7. Discuss the three primary types of water pollutants and their general adverse effects.
8. Explain how a Catalytic Converter helps in controlling pollution from vehicular exhaust.
9. State the 12 Principles of Green Chemistry (list any six) and explain why Green Chemistry is important.
10. Discuss the sources and harmful effects of two major soil pollutants: Pesticides and Fertilizers.
