The formation of cyanohydrin from a keto...

The formation of cyanohydrin from a ketone is an example of
nucleophilic substitution
electrophilic substitution
electrophilic addition
nucleophilic addition.

Electrophilic addtion

Nucleophilic addtion

Nucleophilic substitution

Electrophilic substitution

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The correct Answer is:

Aldehydes and ketones undergo `NA` reactions.

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Which of the following reactions is not an example of electrophilic substitution ?

`C_(6)H_(6) + ""^(+)NO_(2) to C_(6)H_(5)NO_(2) + H^(+)`

`C_(6)H_(5) + CH_(3)Cl overset(AlCl_(3))to C_(6)H_(5) - CH_(3) + HCl`

`C_(6)H_(6) + Cl_(2) overset("UV light")to C_(6)H_(6)Cl_(6)`

`C_(6)H_(5)OH + CO + HCl underset(AlCl_(3))overset("Anhy")to`

`RCHO + R 'Mg x to R - underset(OH) underset(|) CH -R `

`CH_3 - CH_2 - oevrset(CH_3) overset(|) CH -CH_2 Br +NH_3 to CH_3 - CH_2 - overset(CH_3) overset(|) CH-CH_2 NH_2`

`CH_3 CHO +HCN to CH_3 CH (OH) CN`

`CH_3 - CH = CH_2 + H_2 O overset(H^(+)) to CH_3 - underset(OH) underset(|) CH - CH_3`