A) Ethyl chloride
B) Acetyl chloride
C) Benzaldehyde
D) Chlorobenzene
Correct Answer: A
Solution :
When ethyl chloride is heated with aqueous alcoholic KCN, ethyl cyanide is obtained. \[{{C}_{2}}{{H}_{2}}Cl+KCN\xrightarrow{\text{Ethanol}}{{C}_{2}}{{H}_{5}}CN\] However ethanolic KCN is also used in the condensation of benzaldehyde but in this reaction, it only acts as a catalyst.
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