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Question

Which one of the following type of groups will produce an oxime on reaction with NH2OH?

A
RCOOH
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B
RCHO
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C
RCOOCH3
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D
RCONHCH3
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Solution

The correct option is D RCHO
A aldehyde or a ketone containing RCO group will produce an oxime on reaction with NH2OH.

Therefore, RCHO will give an oxime.

A is a carboxylic acid.
B is an aldehyde.
C is an ester.
D is an amide.
Only aldehydes/ketones react with hydroxylamine to form oxime.

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