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HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Important Questions

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Compound having general formula is called

(A) diester

(B) acid anhydride

(C) hemiacetal

(D) acetal

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Nomenclature of Aldehydes and Ketones

How is 4-methylpent-3-en-2-one obtained from propan-2-one?

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Reactivity of Alpha Hydrogen in Aldehydes

How are the following compounds prepared?

benzaldehyde from benzene

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

Formalin is 40% aqueous solution of:

(a) Methanal

(b) Methanoic acid

(c) Methanol

(d) Methanamine

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Uses of Aldehydes and Ketones

Give IUPAC name of :

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Nomenclature of Aldehydes and Ketones

Write a note on ‘aldol condensation’.

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Preparation of Aldehydes and Ketones

Explain the mechanism of alkaline hydrolysis of tert-butyl bromide with energy profile diagram.

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

What is the action of phenyl hydrazine on propanone?

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Preparation of Aldehydes and Ketones

Write two uses of formaldehyde

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Nomenclature of Aldehydes and Ketones

Explain the structure of carbonyl functional group

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Nature of Carbonyl Group

What is the action of Zn – Hg / conc. HCl on propanone?

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Preparation of Aldehydes and Ketones

What is the action of Sodium bisulphite on propanone?

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Preparation of Aldehydes and Ketones

How are the following compounds prepared?

acetophenone from benzene

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

How are the following compounds prepared?

benzaldehyde from benzoyl chloride

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

Write balanced chemical equations for action of ammonia on - acetaldehyde

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

Write balanced chemical equations for action of ammonia on - acetone

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

Write only reactions for the preparation of benzophenone from benzonitrile.

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Preparation of Aldehydes and Ketones

What is the action of the following reagents on ethanoic acid?

1) `LiAlH_4"/"H_3O^+`

2) `PCl_3 , "heat"`

3) `P_2O_5, "heat"`

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

A compound used as pistachio flavour in ice cream is ___________

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Introduction of Aldehydes, Ketones and Carboxylic Acids

Write the structure of Phenylmethanamine.

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions
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