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

Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.

(CH₃CH₂)₂NCH₃

Account for the following:

Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.

Arrange the following:

In increasing order of basic strength:

C₆H₅NH₂, C₆H₅NHCH₃, C₆H₅CH₂NH₂

Write a short note on the following:

Hoffmann’s bromamide reaction

Write the structure of 2,4-dinitrochlorobenzene

Give reasons for the following:

CH₃NH₂ is more basis than C₆H₅NH₂.

Write the IUPAC name of the given compound :

Illustrate the following reactions giving suitable example in each case 

Ammonolysis

Illustrate the following reactions giving suitable example in each case 

Coupling reaction

Illustrate the following reactions giving suitable example in each case 

Acetylation of amines

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

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

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

Arrange the following in increasing order of basic strength :

C₆H₅NH₂, C₆H₅NHCH₃, C₆H₅N(CH₃)₂

Draw the structures of the following compounds :

 N₂O₅

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

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

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

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?