For the reaction

the products is/are:

The correct answer is option 4.

Nitration of chlorobenzene is an electrophilic aromatic substitution reaction. Nitration takes place in the presence of concentrated nitric acid and concentrated sulphuric acid.

The reaction between these two acids generates an electrophile called nitronium ion, \(NO_2^+\) which is first step. Chlorine being an electron donating group when attached to a benzene ring thereby activates the ortho and para position of the benzene where the nitronium attacks. Thus, we get two nitrated products, namely, ortho nitro chlorobenzene and para nitro chlorobenzene respectively.