Question Bank for 8th Class Science Coal and Petroleum,
Coal tar done clear. C) Coke done clear. D) Carbon dioxide done clear. E) None of these done clear. View Solution play_arrow; question_answer6) A useful product of destructive distillation of coal which is used in making drugs and photographic materials is; A) Coal gas,Unit of calorific value of a fuel is: A)Coal | Products - Coke, Coal Tar And Coal Gas | Uses,,Coal tar: It is obtained as a by-product in the process of making coke. Though its colour is the same as coke, tar is a highly viscous liquid. It also has an extremely unpleasant smell. Uses: Coal tar is widely used to manufacture paints, perfumes, synthetic dyes, photographic material, drugs and explosives.CBSE 8 Science CBSE- Coal and Petroleum, Free Test,(2) Coal tar (liquid): Coal tar is a mixture of different carbon compounds. It thick, black liquid with unpleasant smell. The fractional distillation of coal tar gives many chemical substances which are used in the preparation of dyes, explosives, paints, synthetics fibers, drugs, and pesticides.