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Science (English Medium) Class 12 - CBSE Important Questions for Chemistry

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Chemistry
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Write a short note on the following:

Hoffmann’s bromamide reaction

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Preparation of Amines

Write the structure of 2,4-dinitrochlorobenzene

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Nomenclature of Animes

Give reasons for the following:

CH3NH2 is more basis than C6H5NH2.

Appears in 1 question paper
Chapter: [9] Amines
Concept: Classification of Amines

Write the IUPAC name of the given compound :

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Nomenclature of Animes

Illustrate the following reactions giving suitable example in each case 

Ammonolysis

Appears in 1 question paper
Chapter: [9] Amines
Concept: Physical Properties of Amines

Illustrate the following reactions giving suitable example in each case 

Coupling reaction

Appears in 1 question paper
Chapter: [9] Amines
Concept: Diazonium Salts >> Chemical Reaction of Diazonium Salts - Reactions Involving Retention of Diazo Group

Illustrate the following reactions giving suitable example in each case 

Acetylation of amines

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Chemical Reactions of Amines - Electrophilic Substitution

 Describe Hinsberg method for the identification of primary, secondary and tertiary amines. Also write the chemical equations of the reactions involved.

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Identification of Primary, Secondary and Tertiary Amines

Give the structures of A, B and C in the following reactions :

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Preparation of Amines

Give the structures of A, B and C in the following reactions :

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Preparation of Amines

Give the structures of A, B and C in the following reactions :

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Preparation of Amines

Arrange the following in increasing order of basic strength :

C6H5NH2, C6H5NHCH3, C6H5N(CH3)2

Appears in 1 question paper
Chapter: [9] Amines
Concept: Physical Properties of Amines

Draw the structures of the following compounds :

 N2O5

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Chemical Reactions of Amines - Reaction with Nitrous Acid

Account for the following:
Gabriel phthalimide synthesis is not preferred for preparing aromatic primary amines.

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Preparation of Amines

 Account for the following: 
On reaction with benzene sulphonyl chloride, primary amine yields product soluble in alkali whereas secondary amine yields product insoluble in alkali.

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Chemical Reactions of Amines - Reaction with Arylsulphonyl Chloride

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

Appears in 1 question paper
Chapter: [9] Amines
Concept: Structure of Amines

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

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Preparation of Amines

Write chemical equation in support of your answer. 
 Out of  Cl and O2N Cl. which one is more reactive  towards nucleophilic substitution reaction and why?

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Chemical Reactions of Amines - Reaction with Arylsulphonyl Chloride

An aromatic compound 'A' on heating with Br2 and KOH forms a compound 'B' of molecular formula C6H7N which on reacting with CHCl3 and alcoholic KOH produces a foul-smelling compound 'C'. Write the structures and IUPAC names of compounds A, B, and C.

Appears in 1 question paper
Chapter: [9] Amines
Concept: Diazonium Salts >> Importance of Diazonium Salts in Synthesis of Aromatic Compounds

Write the equation involved in Friedal-Crafts Alkylation of Phenol 

Appears in 1 question paper
Chapter: [9] Amines
Concept: Amines >> Chemical Reactions of Amines - Alkylation and Acylation
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