Question

Q.4 plz help..........

Answer 1

Coal gas is a mixture of hydrogen, methane and carbon monoxide. It has a high calorific value. It is also used as a reducing agent due to presence of hydrogen.

Coke is used in preparation of acetylene, acetic acid and polyvinyl chloride.

Coal tar is a mixture of about 200 different carbon compounds. It is used to surface roads and water proof roads.

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Answer 2

the residue left behind when destructive distillation of coal is carried out is coke.
coal gas is a mixture of hydrogen, methane, carbon monoxide and other gases.
coal tar is a thick viscous liquid mainly used for road construction