What are destructive distillation?
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decomposition of a solid by heating it in a closed container and collecting the volatile constituents given off.
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Destructive distillation is the process of heating a complex substance such as coal, in limited supply of air so that it breaks down to form these simpler substances. In this process, coal is heated to 1000°C in the absence of air to obtain different useful components such as coke, coal gas, coal tar and ammonical liquor.
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