Page 3 - HA

1. Why LPG is better fuel than wood? 1

2. What is the full form of CNG? 1

3. What is the full form of LPG? 1

4. Which gases are responsible for global warming? 1

5. Write two advantages of CNG. 2

Concept –Greenhouse effect and global warming.

1. What do you mean by greenhouse? 1

2. What is the greenhouse effect? 1

3. Write two causes of the greenhouse effect. 1

4. Write two effects of the greenhouse effect. 1

5. What is global warming? 1

6. What is acid rain? 1

7. Write down two effects of acid rain. 2

8. Write down two effects of global warming. 2

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