Which one is most reactive towards Nucleophilic addition reaction?

Solution

Electron withdrawing $\left(-\mathrm{I},\mathrm{ }-\mathrm{M}\right)\mathrm{ }$ groups increases reactivity towards nucleophilic addition reaction.
In $\mathrm{N}{\mathrm{O}}_2\left(-\mathrm{I},-\mathrm{M}\right)$ group increases the reactivity towards nucleophilic addition reaction at $\mathrm{C}\mathrm{H}\mathrm{O}$ group.

Asked in: NEET 2014

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