The reagent that gives an orange colouration with acetaldehyde is:
A
NH2OH
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B
NaHSO3
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C
I2
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D
2,4−DNP
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Solution
The correct option is D 2,4−DNP 2,4-dinitrophenylhydrazine gives orange colour with acetaldehyde.This is used for identification of aldehydes and ketones.
The reaction is as follows: