Question

write a few characterstics in coal tar and coal gas

Answer 1

coal tar
--black
--thick liquid
--has unplesant smell
--is a mixture of about 200 substances like drugs, synthetic dyes, explosives, perfumes etc.
coal gas
--obtained during the processing of coal to get coke
--used as a fuel in industry
--for lighting purpose

Answer 2

coal gas are used in the industry and also used for lighting purposes
coal tar are used in explosives, perfumes etc.
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