Question

what is a coke use and defintion

Answer 1

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It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern. The unqualified term "coke" usually refers to the product derived from low-ash and low-sulfur bituminous coal by a process called coking.

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Answer 2

Coke is almost pure form of carbon and is obtained when coal is burned without air. It is used in metallurgy which is extracting metals from their ore