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Question

Coke is produced by

A.

Pulverizing coal in inert atmosphere

B.

Heating wood in a limited supply of air at temperatures below 3000

C.

Strongly heating coal in the absence of air in a closed vessel

D.

Binding the pulverized coal into briquettes

Answer ( Option C)

Strongly heating coal in the absence of air in a closed vessel

Solution

●Coke is produced by heating coal at high temperatures in absence of oxygen, for long periods of time. This heating is called thermal distillation or pyrolysis.

●In order to produce coke that will be used in blast furnaces, coal is usually thermally distilled for 15 to 18 hours, but the process can take up to 36 hours.

●Coke is the residue of coal left after destructive distillation and used as fuel.

Hence, the correct option is (C).

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