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Science (English Medium) Class 12 - CBSE Important Questions

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Predict the products of the following reactions:

 

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

Predict the products of the following reactions:

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Methods of Preparation of Carboxylic Acids

Predict the products of the following reactions:

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Chemical Reactions of Carboxylic Acids - Reactions Involving Cleavege of C-OH Bond

Write the structure of p-methylbenzaldehyde.

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Structure of the Carbonyl Group

Write the structure of 4-chloropentan-2-one.

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Structure of the Carbonyl Group

Write the structure of 2-hydroxybenzoic acid.

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Nomenclature of Carboxylic Acids

Show how the following compound can be converted to benzoic acid.

Phenylethene (Styrene)

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Methods of Preparation of Carboxylic Acids

Write the reactions involved in the following reactions: Clemmensen reduction

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Chemical Reactions of Aldehydes and Ketones - Other Reactions

Write the reactions involved Hell-Volhard Zelinsky reaction?

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Chemical Reactions of Carboxylic Acids - Reactions Involving Cleavege of O-H Bond

Write the reactions involved Decarboxylation reaction

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Chemical Reactions of Carboxylic Acids - Reactions Involving –COOH Group

Give simple chemical tests to distinguish between the following pairs of compounds:

Butanal and Butan-2-one

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Nomenclature of Aldehydes and Ketones

Write the reaction involved in the Stephen reduction

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Preparation of Aldehydes

Complete the following reactions:

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Chemical Reactions of Aldehydes and Ketones - Other Reactions

Complete the following reactions:

 

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Chemical Reactions of Aldehydes and Ketones - Other Reactions

Name the reagents used in the following reactions:

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Methods of Preparation of Carboxylic Acids

Why are alkyl halides insoluble in water?

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Physical Properties of Carboxylic Acids

How do you convert the following :

 Ethyne to Ethanal

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Nomenclature of Carboxylic Acids

Write the equations involved in the following reactions :

Stephen reaction

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Acids >> Nomenclature of Carboxylic Acids

Predict the products of the following reactions :

\[{CH}_3 - CH = {CH}_2 \to^{i) B_2 H_6}_{ii) 3 H_2 O_2 / {OH}^-} ?\]
Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Chemical Reactions of Aldehydes and Ketones - Reduction
\[C_6 H_5 - OH \to^{{Br}_2 \left( aq \right)} ?\]
Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Concepts of Aldehydes, Ketones, and Carboxylic Acids >> Chemical Reactions of Aldehydes and Ketones - Oxidation
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