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SAI INTERNATIONAL SCHOOL
Subject–Chemistry
Class – VIII
Topic- Pollution of Air and Water.
Concept Mapping

HOME ASSIGNMENT

Concept –Air pollution

1. What do you mean by air pollution? 1

2. What are air pollutants? 1

3. Write down examples of four air pollutants. 1

4. Write down two sources of air pollution that can originate from home. 1

5. Write down two sources of air pollution that can originate from 1
industries and refineries.

6. Write down two harmful effects of air pollution 1

7. Write down two harmful effects caused due to suspended particulate 1
matter.

8. What is acid rain? 1

9. Which gases are responsible for acid rain? 1

10. Write down two effects of acid rain. 1

Concept –The greenhouse effect

1. What do you mean by greenhouse gases? 1

2. Give four examples of greenhouse gases. 1

3. What is the greenhouse effect? 1

4. Why the greenhouse effect is important on earth? 1

5. How the greenhouse effect can be fatal to us? 1

6. Write down two effects of the greenhouse effect. 1

7. What is global warming? 1

8. How global warming can be dangerous to us? 1

9. Write down two effects of global warming. 1

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