Question

coal on burning in absence of air gives coke​

Answer 1

Answer:

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Explanation:

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Answer 2

1)When coal is heated in the absence of air,then coal gas and coal tar are eliminated,and coke is left behind as a black residue. 2)Coke is an almost pure form of carbon.It is 98% carbon. 3)It is mainly used as a reducing agent in the extraction of metals.