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(A) overset(NaNO(2)//HCl)underset((ii)H(...

(A) `overset(NaNO_(2)//HCl)underset((ii)H_(2)//Ni)underset(0-5^(@))(rarr)(B)` , is:

A

B

C

D

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The correct Answer is:
A

Nucleophilic substitution as `-NO_2` makes aryl halides undergo, secondly `R_2NH` is very strong mucliophile.
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