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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3nc106

Select the correct pairs of nitrobenzene reduction conditions and main products.

A $LiAlH X_{4}$ : aniline
B $H X_{2} / Ni$ : azobenzene
C $Zn / NH X_{4} Cl$ (aq.): N-phenylhydroxylamine
Delectrolytic reduction in strongly acidic medium: 4-aminophenol

Answer: C, D

Neutral reduction stops at

C X_{6} H X_{5} NHOH

, and in strong acid this rearranges to 4-aminophenol.

LiAlH X_{4}

gives azobenzene, not aniline, and catalytic hydrogenation over Ni gives aniline, not azobenzene. The first two pairs are correct.

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