English

HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Important Questions for Chemistry

Advertisements
[object Object]
[object Object]
Subjects
Popular subjects
Topics
Advertisements
Advertisements
Chemistry
< prev  1321 to 1340 of 1638  next > 

Write preparation of acetic acid from:

dry ice

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

How ketones are prepared from nitriles?

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

How acetone is converted into propane.

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

How propanal is converted into propane.

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

Ozonolysis of 2, 3 dimethyl but-2-ene, followed by decomposition by Zn dust and water gives ______.

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

Explain Aldol condensation of ethanal.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Reactions Due to α-hydrogen

The product of hydrolysis of propyne in the presence of 1% \[\ce{HgSO4}\] and 40% \[\ce{H2SO4}\] is ______.

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

Write preparation of propanone by using ethanoyl chloride and dimethyl cadmium.

Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Preparation of Aldehydes and Ketones
Identify 'A', 'B' and 'C' in following chain reaction and rewrite the chemical reactions:
\[\ce{CH3CH2OH ->[red 'P'][Br2] A ->[KCN][alc] B ->[LiAlH4][Ether] C}\]
Appears in 1 question paper
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Properties of Carboxylic Acids

What are ketones? 

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

How are ketones classified?

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

Write the structures and IUPAC names of the α - methyl butyraldehyde.

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

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

(A) Ammonia

(B) Hydroxylamine

(C) Ammoniacal silver nitrate

(D) Semicarbazide

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 - formaldehyde

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

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
< prev  1321 to 1340 of 1638  next > 
Advertisements
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×