English
Karnataka Board PUCPUC Science 2nd PUC Class 12

What is meant by the following term? Give an example of the reaction in the following case. 2, 4-DNP-derivative

Advertisements
Advertisements

Question

What is meant by the following term? Give an example of the reaction in the following case.

2, 4-DNP-derivative

Chemical Equations/Structures
One Line Answer
Advertisements

Solution

When an aldehyde or ketone reacts with 2, 4-dinitrophenylhydrazine in a weak acidic medium, 2, 4-dinitrophenylhydrazone (2, 4-DNP derivative) is produced.

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Aldehydes, Ketones and Carboxylic Acids - Exercises [Page 255]

APPEARS IN

NCERT Chemistry Part 1 and 2 [English] Class 12
Chapter 8 Aldehydes, Ketones and Carboxylic Acids
Exercises | Q 8.1 (ix) | Page 255

RELATED QUESTIONS

Write the products formed when CH3CHO reacts with the following reagents : H2N – OH


Predict the product of the following reaction:


Predict the product of the following reaction:


What is meant by the following term? Give an example of the reaction in the following case.

Ketal


Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.

PhMgBr and then H3O+


Arrange the following compounds in increasing order of their property as indicated:

Acetaldehyde, Acetone, Di-tert-butyl ketone, Methyl tert-butyl ketone (reactivity towards HCN)


What are amines?


How will you convert sodium acetate to methane?


Write the main product formed when propanal reacts with the following reagents: 
2 moles of 3 CH OH in presence of dry HCl 


How will you convert benzoic acid to m-bromobenzoic acid?


Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzalchloride and then benzaldehyde from it.


Identify the compounds A, B and C in the following reaction.

\[\ce{CH3 - Br ->[Mg/ether] (A) ->[(i) CO][(ii) Water] (B) ->[CH3OH/H+][Δ] (C)}\]


Which of the following has the most acidic hydrogen?


What is the action of sodium hypoiodite on acetone?


Draw structure of the following derivative:

Acetaldehydedimethylacetal


Draw structures of the following derivatives.

Acetaldehydedimethylacetal


Draw the structure of the following derivative.

Acetaldehydedimethylacetal


Draw structure of the following derivative.

The ethylene ketal of hexan-3-one


Which of the following will not be formed when calcium formate is distilled with calcium acetate?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×