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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

What is meant by the following term? Give an example of the reaction in the following case. Schiff’s base - Chemistry

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प्रश्न

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

Schiff’s base

रासायनिक समीकरणे/रचना
एका वाक्यात उत्तर
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उत्तर

Aldehydes and ketones react with primary aliphatic or aromatic amines to form azomethine or Schiff's base.

\[\ce{\underset{Aldehyde}{R - CH = O} + \underset{1° amine}{H2N - R'} ->[H+][Heat] \underset{Schiff’s base}{R - CH = N - R'} + H2O}\]

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पाठ 8: Aldehydes, Ketones and Carboxylic Acids - Exercises [पृष्ठ २५५]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
पाठ 8 Aldehydes, Ketones and Carboxylic Acids
Exercises | Q 8.1 (x) | पृष्ठ २५५

संबंधित प्रश्‍न

Acetaldehyde, when treated with which among the following reagents does NOT undergo addition reaction?

(A) Ammonia

(B) Hydroxylamine

(C) Ammoniacal silver nitrate

(D) Semicarbazide


Arrange the following compound in increasing order of its reactivity in nucleophilic addition reactions.

Ethanal, Propanal, Propanone, Butanone.

Hint: Consider steric effect and electronic effect.


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

Acetal


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

Semicarbazone


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

2, 4-DNP-derivative


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

Semicarbazide and weak acid


Complete the synthesis by giving missing starting material, reagent or product.


How are the following compounds prepared?

acetophenone from benzene


Write balanced chemical equations for action of ammonia on - acetone


Reaction of aqueous sodium hydroxide on chlorobenzene gives which of the following products?


Which one of the following gives only one monochloro derivative?


Paraldehyde is formed as a result of polymerisation:-


Write the name of product formed, when acetone is treated with 2, 4-dinitrophenyl hydrazine.


What is the action of sodium hypoiodite on acetone?


Draw structure of the following derivative.

The ethylene ketal of hexane-3-one


Draw the structure of the following derivative.

The ethylene ketal of hexan-3-one


Draw structure of the following derivative.

The ethylene ketal of hexan-3-one


Draw structure of the following derivative.

The ethylene ketal of hexan-3-one


Draw the structure of the given derivative.

The ethylene ketal of hexan-3-one


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