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The most reactive compound towards forma...

The most reactive compound towards formation of cyanohydrin on treatment with KCN followed by acidification is

A

Benzaldehyde

B

p-nitrobenzaldehyde

C

Phenyl acetaldehyde

D

p-hydroxybenzaldehyde

Text Solution

Verified by Experts

The correct Answer is:
B
Due to electron withdrawing nature of `NO_2` group, the partial +ve charge on the carbon atom of the `gt` C = O group in p-nitrobenzaldehyde increases and hence becomes more susceptible to nucleophilic attack by `CN^(–)` ion.
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