define coal tar and coal gas
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Explanation:
Coal tar is derived from coal. It is a byproduct of the production of coke, a solid fuel that contains mostly carbon, and coal gas. Coal tar is used primarily for the production of refined chemicals and coal-tar products, such as creosote and coal-tar pitch
a mixture of gases (chiefly hydrogen, methane, and carbon monoxide) obtained by the destructive distillation of coal and formerly used for lighting and heating.
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Explanation:
they both are the products of coal
coal tar is in liquid state whereas coke is in gaseous state..
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