Although chlorobenzene does not give Ullmann reaction. However presence of ......................... group in chlorobenzene at o-, p-position enables it to give Ullmann's reaction.

Identify the relation among the rates of following nucleophilic substitution reactions?

The rates of reaction of $\mathrm{NaOH}$ with:

follow the order:-

The product in the above reaction is

The correct order of the following compounds showing increasing tendency towards nucleophilic substitution reaction is:

The major product of the following reaction is