Reaction of Chloroethane with ethanolic ammonia will result in

Quaternary ammonium salt

The correct answer is Option (4) → Quaternary ammonium salt

Chloroethane reacts with ethanolic ammonia through nucleophilic substitution where ammonia acts as a nucleophile and replaces the chlorine atom. The initial product formed is ethylamine (ethanamine). Although further alkylation can occur to form secondary, tertiary amines and quaternary ammonium salts, using excess ammonia favors formation of the primary amine by minimizing further substitution.