Chemistry - GOC Question with Solution | TestHub

Due to $+R$ effect of $Ph$ group and $+I$ effect of ${\mathrm{CH}}_3$ group, the magnitude of positive charge on carbon atom of $\mathrm{C}=\mathrm{O}$ group decreases to such an extent that weak nucleophilic like ${\mathrm{NaHSO}}_3$ does not add to the carbonyl group of acetophenone.