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Q. Benzamide on reaction with $POCl_{3}$ gives

NTA AbhyasNTA Abhyas 2022

Solution:

Benzamide on treatment with $POCl_{3}$ gives benzonitrile (phenyl cyanide) because in this reaction $POCl_{3}$ acts as a dehydrating agent and on dehydration of benzamide, benzonitrile is formed.
$C_{6}H_{5}CONH_{2}\overset{P O C l_{3} / \Delta }{ \rightarrow }C_{6}H_{5}CN+H_{2}O$