1. Write the names of two natural substances.
2. What is the purest form of carbon?
3. What is the main use of coke?
4. Name two fractions of petroleum>
5. Why petroleum is called black gold?
6. Expand PCRA.
7. What are natural resources? Explain with examples.
8. What are fossil fuels? Name main fossil fuel.
9. What is coal tar? What are its uses?
10. Why CNG is called clean fuel?
11. State some harmful effects of using fossil fuels?
12. What are petrochemicals?
Answers
1.coal &petroleum
2.coke & diamond
3.use as the kajal
4.Distillation & fractional
5.Because the petroleum is decreasing day by day
6.Petroleum Conservation Research Association
7.I am giving you only example : water, land, air etc.
8.This one also example :coal petroleum and natural gas
9. It is a black, thick liquid with an unpleasant smell. It is the mixture of 200 substances. Products obtained from coal tar are used as various substances used in everyday life. Example are dyes,drugs,explosives etc.
Answer:
1.coal &petroleum
2.coke & diamond
3.use as the kajal
4.Distillation & fractional
5.Because the petroleum is decreasing day by day
6.Petroleum Conservation Research Association
7.I am giving you only example : water, land, air etc.
8.This one also example :coal petroleum and natural gas
9. It is a black, thick liquid with an unpleasant smell. It is the mixture of 200 substances. Products obtained from coal tar are used as various substances used in everyday life. Example are dyes,drugs,explosives etc.
Explanation: