• # question_answer Which of the following cannot undergo nucleophilic substitution under ordinary conditions [J & K 2005] A) Chlorobenzene B) tert-butylchloride C) Isopropyl chloride D) None of these

All the given species undergo nucleophilic substitution reaction. This reactivity can be explained in terms of the nature of $C-X$ bond which is highly polarised covalent bond due to large difference in the electronegativities of carbon and halogen atoms. $-\overset{{{\delta }^{+}}}{\mathop{C}}\,-\overset{{{\delta }^{-}}}{\mathop{X}}\,$