What is coal-tar? How is it useful to us?
Black liquid obtained during destructive distillation of coal is coal-tar. It is thick and smells unpleasant. It is a mixture of hundreds of substances. Substances obtained from coal-tar are used to manufacture synthetic dyes, drugs, explosives, perfumes, plastics, paints, roofing materials, photographic materials, etc.
What does coal mainly consist of?
What is coke? How is it useful to us?
Which constituents are separated from petroleum during the refining of petroluem?
What is coal and also write its uses?