Identify the amide and cyanide which on reduction with appropriate reducing agent gives n - butylamine.

Explanation

a) Propyl cyanide on reduction gives n - Butylamine
`underset("propyl cyanide")(CH_(3)-CH_(2)-CH_(2)-C-=N) underset(Na//C_(2)H_(5)OH) overset(H_(2)//Ni) to underset("n-butyl amine")(CH_(3)-CH_(2)-CH_(2)-CH_(2)-NH_(2)`
b) Butanamide on reduction gives n - Butyl amine
`underset("Butanamide")(CH_(3)-CH_(2)-CH_(2)- overset(O) overset(||) C -NH_(2)) underset("ii)"H_(2)O)overset("i)" LiAlH_(4)) to underset("n-Butyl amine")(CH_(3)-CH_(2)-CH_(2)-NH_(2))`