Question
Identify A and B in each of the following processes:
- $\text{CH}_{3}\text{CH}_{2}\text{Cl}\xrightarrow{\text{NaCN}}\text{A}\xrightarrow[\text{Ni/H}_{2}]{\text{reduction}}\text{B}$.
- $\text{C}_{6}\text{H}_{5}\text{NH}_{2}\xrightarrow{\text{NaNO}_{2}/\text{HCl}}\text{A}\xrightarrow[\text{OH}^{-}]{\text{C}_{6}\text{H}_{5}\text{NH}_{2}}\text{B}$.

