Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202126 FebruaryEvening Shift
Exam
JEE Main
Year
2021
Date
26 February
Shift
Evening Shift
Subject
Chemistry
Chapter
Aldehydes and Ketones

JEE Main 2021 · 26 February · Evening Shift · Chemistry · Aldehydes and Ketones

2, 4 - DNP test can be used to identify :

2,4−DNP2, 4 - DNP test can be used to identify :

Options

  1. Aaldehyde
  2. Bamine
  3. Chalogens
  4. Dether

Correct answer

A. aldehyde

Step-by-step solution

2,4−DNP2, 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

Practice Aldehydes and Ketones on Quantrex Academy →

More from Aldehydes and Ketones

Consider the following reaction. The major product (P) formed is: JEE Main 2026' x ' is the product which is obtained from benzene by reacting it with carbon monoxide… JEE Main 2026' x ' is the product which is obtained by the hydrolysis of prop-1-yne in the presence of… JEE Main 2026Given below are two statements: Statement-I: The condensation reaction between CH_3-CH=O… JEE Main 2026An organic compound " x " where molar ratio of C, O and H are equal, on treatment with… JEE Main 2026Given below are the four isomeric compounds (P, Q, R, S) Identify correct statements from… JEE Main 2026Given below are two statements: Statement I : Cross aldol condensation between two… JEE Main 2026Which of the following statements are TRUE about Haloform reaction?: A. Sodium… JEE Main 2026 Full Aldehydes and Ketones list All JEE Main PYQs