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Ammolysis of Alkyl halides followed by treatment with NaOH solution can be used to prepare primary, secondary and tertiary amines. The purpose of NaOH in the reaction is :

1. to remove basic impurities
2. to activate NH3 used in the reaction
3. to remove acidic impurities
4. to increase the reactivity of alkyl halide

Correct answer: to increase the reactivity of alkyl halide

Solution

NaOH acts as a strong base that can deprotonate the amine, enhancing its nucleophilicity and making it more reactive towards the alkyl halide, thus facilitating the formation of amines.

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