Given below are two statements: Statement I : The dipole moment of...

Statement I: The dipole moment of alkyl cyanides ($R-CN$) is indeed greater than alkyl isocyanides ($R-NC$) because the $C \equiv N$ bond is more polar than the $N^+ \equiv C^-$ bond where formal charges oppose the electronegativity difference. However, the acidic hydrolysis of $R-NC$ produces a primary amine ($R-NH_2$) and formic acid ($HCOOH$), not a carboxylic acid ($R-COOH$). Thus, Statement I is false.
Statement II: $R-CN$ on acidic hydrolysis gives $R-COOH$. Treatment with $SOCl_2$ gives $R-COCl$. Addition of $NH_3$ gives $R-CONH_2$ (compound x). Treatment of $R-CONH_2$ with $NaOCl/NaOH$ (Hofmann Bromamide Degradation equivalent) gives $R-NH_2$. $R-NH_2$ on treatment with $CHCl_3/KOH/\Delta$ (Carbylamine reaction) produces $R-NC$. Thus, Statement II is true.
Therefore, Statement I is false but Statement II is true.