Write a short note on coke.
Page 214 Chapter - 10. Mineral Coal and Minerak Oil
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It is a greyish -black solid and is not as shiny as coal .it has a rough texture .
when coal is heated in the absence of air , the volatile impurities and moisture get removed .The solid left behind is called coke
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Coke is grey- coloured, hard textured, and porous fuel. Coke contains high carbon content. It is obtained by destructive distillation process. It is generally either made by heating coal or oil in the absence of air.
Coke is an important industrial product. It finds an eminent place in iron ore smelting. It is a household fuel also used in stoves and forges though air pollution is a major concern.
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