COAL & PETROLEUM ncert_CLASS8

  • 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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