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Question: Answered & Verified by Expert
2, 4-DNP test can be used to identify :
ChemistryAldehydes and KetonesJEE MainJEE Main 2021 (26 Feb Shift 2)
Options:
  • A aldehyde
  • B amine
  • C halogens
  • D ether
Solution:
1220 Upvotes Verified Answer
The correct answer is: aldehyde

2, 4-DNP test is useful for the identification of carbonyl compounds.

The 2,4-dinitrophenylhydrazine can be used as a process for the identification of aldehydes and ketones.

The formed 2,4-dinitrophenylhydrazone is a solid that is purified and the melting point is determined. The comparison of a melting point with a table of known values could identify the compound as aldehyde or ketone

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