CBSE Class 8 Science Coal and Petroleum Assignment Set D

CBSE Class 8 Science - Coal and Petroleum (4)

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A. Answer the following in one word or very briefly.

1. Name two fossil fuels.

2. Which government organization is associated with petroleum?

3. What is CNG?

4. Which process is used to separate the components of petroleum?

5. What is the source of a natural gas?

B. Answer the following in brief.

1. State two important uses of coal?

2. What is a fossil fuel?

3. What is carbonization process?

4. How is petroleum formed in nature?

5. Why must we look for alternative sources of energy?

C. Answer the following in appropriate detail.

1. Describe in brief the formation of coal in the earth.

2. Where is natural gas found? Why is it called a clean fuel? Give two

reasons.

3. State two important uses of CNG.

 

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