A dinitro-toluene bearing two -NO_2 groups flanking a ring -CH_3 group is treated with H_2S/NH_3 (a mild, selective reducing system). The product obtained is

JEE Main Chemistry question

A dinitro-toluene bearing two groups flanking a ring group is treated with (a mild, selective reducing system). The product obtained is

(A)the toluene ring with both groups reduced to
(B)the toluene ring with only one group reduced to , the other left intactCorrect
(C)the toluene ring with both groups unaffected, plus a new elsewhere on the ring
(D)The compound is not reduced

Answer: (B)

is a mild, selective reducing combination capable of reducing only one of the two equivalent nitro groups on the ring, leaving the

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Question ID VK-150379