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Question

Aldehydes on reaction with NH2NH2 forms:

A
aniline
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B
hydrazone
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C
nitrobenzene
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D
none of the above
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Solution

The correct option is B hydrazone
Reaction between hydrazine with aldehyde forms hydrazone. It is a condensation reaction. The reaction is shown below:
RCHO+NH2NH2RCH=NNH2Aldehyde Hydrazine Hydrazone
Hence, Option (b) is the correct aswer.

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