difference between coal and coke
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Charcoal is a fuel that comes from the incomplete burning of wood. Coke is a fuel that is obtained from the calcination or dry distillation of mineral coal. ... It is composed of carbon and has a high calorific value, but it is highly polluting.
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Coal
is a hard rock which can be burned as a solid fossil fuel. It is mostly carbon but also contains hydrogen, sulphur, oxygen and nitrogen.
Coke
is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation
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