Presence of a nitro group at ortho or para position increases the reactivity of haloarenes towards

Given data : It is given to identify presence of a nitro group at ortho or para position increases the reactivity of haloarenes towards

Explanation:

Because $N{O}_2$ is an electron-withdrawing group and lowers the electron density around the benzene ring, it makes haloarenes more reactive to nucleophilic substitution when it is present in the ortho or para position.

The reactivity of haloarenes to nucleophilic substitution is increased by the presence of the nitro group in the ortho or para position because $NO$ the electron density over the benzene ring falls because the group is an electron-withdrawing group.

In a type of organic reaction known as nucleophilic substitution reaction, one nucleophile replaces another. It is quite similar to the common displacement reactions we see in chemistry when a more reactive element pushes a less reactive element out of its salt solution.

Hence, the correct option (A). nucleophilic substitution reaction.