Answer:
It is 2,4-dinitrophenylhydrazine, it confirms presence of a carbonyl functional group [ hydrazine and ketone ]
Step-by-step explanation:
Brady's reagent or Borche's reagent, is prepared by dissolving 2,4-dinitrophenylhydrazine in a solution containing methanol and some concentrated sulfuric acid. This solution is used to detect ketones and aldehydes.
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