what is the coke? how to useful to us?
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a solid fuel made by heating coal in the absence of air so that the volatile components are driven off
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coke is a tough,porous and black substance. it is the pure form of carbon. coke is used for manufacture of steel and in the extraction of many metals. coke burns without producing any smoke. coke is also used as a fuel. it produces more heat on burning than an equal amount of coal.
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swk86:
oww! thanks for this answer
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