Question
Explain different types of isomerism in amines.

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Give the structures of $A, B$ and $C$ in the following reactions :
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(ii) $C _6 H _5 Cl \xrightarrow{ CuCN } A \xrightarrow{ H _2 O / H ^{+}} B \xrightarrow{ NH _3} C$
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(vi) $C _6 H _5 NO _2 \xrightarrow{ Fe / HCl }A \frac{ HNO _2}{273 K} \rightarrow$$B \xrightarrow{ C _6 H _5 OH } C$
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