1.

The appropriate reagent for the following transformation is

Answer»

ZN - Hg/HCl
`H_2N-NH_2`KOH /ethylene glycol
`Ni//H_2`
`NaBH_4`

Solution :
Both Zn- Hg/HCI and `NH_2 NH_2OH^(-)`can REDUCE group but in case of zn-Hg/HCI , HCI will bring about substitution of `OH^(-)`by `CI^(-)`therefore , the most effective regent is `NH_2NH_2OH^(-)`.


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