Q.
Assertion (A) Chlorine is an ortho-para directing group in electrophilic aromatic substitution reaction.
Reason (R) Chlorine is an electron withdrawing group.
Haloalkanes and Haloarenes
Solution:
Chlorine is an electron withdrawing group, yet it acts as ortho, para-directing group in electrophilic aromatic substitution reaction due to its $+R$-effect.
