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HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Important Questions

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What is the action of Sodium bisulphite on propanone?

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones

Write only reactions for the preparation of benzophenone from benzonitrile.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones

How will you convert calcium acetate to acetaldehyde?

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones

What is the action of following reagents on glucose?
1. Bromine water
2. Hydroxylamine

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Methods of Preparation of Carboxylic Acids

The functional group present in triacylglycerol is _______.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Methods of Preparation of Carboxylic Acids

Answer the following in one sentence.

Write reaction showing conversion of ethanenitrile into ethanol.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones

Answer in brief.

What is the action of hydrazine on cyclopentanone in presence of KOH in ethylene glycol?

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Properties of Aldehydes and Ketones

Write a note on Stephen reaction.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Properties of Aldehydes and Ketones

Write reaction showing aldol condensation of cyclohexanone.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Properties of Aldehydes and Ketones

Answer in brief.

Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Properties of Aldehydes and Ketones

Ketones CANNOT be converted into carboxylic acid using _____________

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Classification of Aldehydes, Ketones and Carboxylic Acids

The following reactants CANNOT be converted into carboxylic acid?

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Nomenclature of Aldehydes, Ketones and Carboxylic Acids

Write the number of products when a mixture of ethanal and propanal is reacted with dilute alkali?

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Nomenclature of Aldehydes, Ketones and Carboxylic Acids

Carboxylic acids have higher boiling points than those of ethers. Give reason.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Physical Properties

What is the action of following on proponal?

Hydroxyl amine

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Properties of Carboxylic Acids

What is the action of following on proponal?

Hydrazine

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Properties of Carboxylic Acids

What is the action of following reagents on ethanoic acid?

SOCl2/heat

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones

What is the action of following reagents on ethanoic acid?

sodalime/heat

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones

What is the action of following reagents on ethanoic acid?

P2O5/heat

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones

Write a reaction for the following conversion.

Benzene to Benzaldehyde.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones
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