1.

In order to prepare a primary amine from an alkyl halide with simultaneous addition of one CH_2 group in the carbon chain, the reagent used as source of nitrogen is

Answer»

Sodium amide (`NaNH_2`)
Sodium azide (`NaN_3`)
Potassium cyanide (KCN)
Potassium phthalimide `[C_6 H (CO)_2N^(-) K^(+) ]`.

Solution :Cyanides on REDUCTION gives `1^@`amines with a `CH_2`group, i.e.,
` R - X underset(-KX ) OVERSET("KCN" )toR -CNoverset(Na//C_2 H_5OH) to R -CH_2 NH_2`


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