Question

What type of compounds show substitution reaction? Explain it by an example.

Answer 1

unsaturated hydrocarbons show substitution reaction. Here a functional group substitutes the hydrogen in the chain. this is done to ensure the stability of the compund as unsaturated hydocarbons are highly unstable and reactive.

Answer 2

THE UNSATURATED COMPUNDS SHOW SUBSTITUTION REACTION. 
eg : CH4 + Cl2 = CHCl3 + HCl