4. How is coke obtained?
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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 process. ... A similar product called petroleum coke, or pet coke, is obtained from crude oil in oil refineries.
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Coke is obtained by the destructive distillation of charcoal or coal in the furnace. Destructive distillation is the chemical process involving the decomposition of coal or charcoal by heating to high temperature in the absence of air or in the presence of limited amount of oxygen.
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