- Coal is processed in industry to get some products such as COKE , COAL , TAR & COAL GAS
- COKE : it is tough , porous & black . And almost a pure form of carbon . coke is used in manufacture of steel and in the extraction of many metals .
- COAL TAR : it is black , thick liquid with an unpleasant smell . it is mixture of about 200 substances
- These days , BITUMEN a petroleum product is used in place of coal Tar for metaling the roads .
- COAL GAS : obtained during the processing of coal to get coke
PETROLEUM : it is a source to obtained petrol and diesel .
- Petroleum is also called as BLACK GOLD
NATURAL GAS :
- Natural is gas is stored under high pressure in compressed form (CNG) . It is less polluting . It is a clear Fuel
- In our country Natural Gas has been found in Tripura , Rajasthan , Maharashtra & in the Krishna Godavari Delta .
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