Haloalkanes undergo nucleophilic substitution reactions while haloarenes undergo electrophilic substitution reactions. Explian.

what is substitution reaction?

Why alkynes undergo nucleophilic addition reaction while simple alkenes do not ?

Give the substitution reactions of alkanes.

Carbonyl compounds undergo electrophilic additon reactions

Aryl halides are less reactive in nucleophilic substitution reactions.Give one example for nucleophilic substitution reactions of aryl halides.

ketones give nucleophilic addition reactions more readily.

Why does benzene undergo electrophilic substitution reaction easily and nucleophilic substitution with difficulty ?