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Science (English Medium) इयत्ता १२ - CBSE Important Questions for Chemistry

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Chemistry
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How will you bring about the following conversions?

Propanone to propane

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

Although phenoxide ion has more number of resonating structures than carboxylate ion, carboxylic acid is a stronger acid than phenol. Give two reasons.

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

Complete the following reactions:

 

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

Write the structures of A and B in the following reactions:

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

Write the structures of A and B in the following reactions

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

Distinguish between: CH3COOH and HCOOH

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

Arrange the following in the increasing order of their boiling points: CH3CHO, CH3COOH, CH3CH2OH

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

Arrange the following in the increasing order of their reactivity towards nucleophilic addition reaction:

C6H5COCH3, CH3-CHO, CH3COCH3

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

A and B are two functional isomers of compound C3H6O.On heating with NaOH and I2, isomer B forms yellow precipitate of iodoform whereas isomer A does not form any precipitate. Write the formulae of A and B.

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

Name the reagents used in the following reactions:

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

Predict the products of the following reactions:

 

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

Write the structure of 2-hydroxybenzoic acid.

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

Complete the following reactions:

Appears in 1 question paper
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Other Reactions
< prev  1121 to 1140 of 1313  next > 
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CBSE Science (English Medium) इयत्ता १२ Important Questions
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Important Questions for CBSE Science (English Medium) इयत्ता १२ Chemistry
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Important Questions for CBSE Science (English Medium) इयत्ता १२ Hindi (Elective)
Important Questions for CBSE Science (English Medium) इयत्ता १२ History
Important Questions for CBSE Science (English Medium) इयत्ता १२ Informatics Practices
Important Questions for CBSE Science (English Medium) इयत्ता १२ Mathematics
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Important Questions for CBSE Science (English Medium) इयत्ता १२ Psychology
Important Questions for CBSE Science (English Medium) इयत्ता १२ Sociology
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