CBSE Science Class 8
Coal and Petroleum
Coal and Petroleum - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Points To Remember:
- Natural resources can be broadly classified into inexhaustible natural resources and exhaustible natural resources
- Coal petroleum and natural gas are exhaustible natural resources
- Coal petroleum and natural gas are called fossil fuels because they are formed from dead remains of living organisms
- Coke, coal tar and coal gas are the products of coal
- Coke is almost pure form of carbon
- Coal tar has unpleasant smell and is mixture of about 200 substances
- Petrol and diesel are obtained from a natural resource called petroleum
- Petroleum gas, petrol, diesel, kerosene, paraffin wax, lubricating oil are obtained by the refining of petroleum
- We should make wise and judicious use of our exhaustible resources
