What is destructive distillation of coal? b. Write any one use of: a) coal tar b) coke.
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When a substance is heated in the absence of air, the process is called destructive distillation. It results in the decomposition of the substance, bearing carbon rich residue. Destructive distillation of coal produces coke, coal tar, coal gas and ammonia solution.
a.Coal tar is used primarily for the production of refined chemicals and coal-tar products, such as creosote and coal-tar pitch
b.useful in the production of electrodes used as carbon anodes for the aluminum industry, graphite electrodes for steel making
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