An organic compound A on reduction gives compound B, which on reaction with trichloro methane and caustic potash forms C. The compound 'C' on catalytic reduction gives N-methyl benzenamine, the compound 'A' is :

nitrobenzene

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nitromethane

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methanamine

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benzenamine

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Solution

The correct option is D nitrobenzene
The compound 'A' is nitrobenzene. On reduction it gives aniline (compound B), which on reaction with trichloro methane and caustic potash forms isocyanobenzene (or phenyl isocyanide, compound (C), Hoffmann's
carbylamine test). The compound 'C' on catalytic reduction gives N-methyl benzenamine.

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