Amongst the following compounds,which one(s) | vedclass

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(A, C) Ethyl chloride undergoes nucleophilic substitution with ethanolic $KCN$ to form ethyl cyanide:$C_2H_5Cl + KCN \xrightarrow{	ext{Ethanol}} C_2H

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Benzaldehyde

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(A, C) Ethyl chloride undergoes nucleophilic substitution with ethanolic $KCN$ to form ethyl cyanide:$C_2H_5Cl + KCN \xrightarrow{	ext{Ethanol}} C_2H_5CN + KCl$$(B)$ Chlorobenzene does not undergo nucleophilic substitution with $KCN$ under normal conditions due to the partial double bond character of the $C-Cl$ bond.$(C)$ Benzaldehyde reacts with $HCN$ (generated from $KCN$ in the presence of an acid or in alcoholic medium) to form a cyanohydrin:$C_6H_5CHO + HCN ightarrow C_6H_5CH(OH)CN$$(D)$ Salicylic acid does not react with $KCN$.

Amongst the following compounds,which one$(s)$ readily react with ethanolic $KCN$?

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