Solutions for Class 12 Chemistry Chapter 13 Amines Maharashtra Board

Solved Exercise For Class 12 Chemistry Chapter 13 Amines | Maharashtra Board

Choose the most correct option.

1.The hybridisation of nitrogen in primary amine is ____________.

a. sp

b. sp 2 

c. sp 3 

d. sp 3d 

Solution: The hybridisation of nitrogen in primary amine is sp 3.

2.Isobutylamine is an example of __________. 

a. 2° amine

b. 3° amine

c. 1° amine

d. quaternary ammonium salt

Solution: Isobutylamine is an example of 1° amine.

3.Which one of the following compounds has the highest boiling point?

a. n-Butylamine

b. sec-Butylamine

c. isobutylamine

d. tert-Butylamine

Solution: n-Butylamine

4. Which of the following has the highest basic strength?

a. Trimethylamine

b. Methylamine

c. Ammonia

d. Dimethylamine

Solution: Dimethylamine

5. Which type of amine does produce N2 when treated with HNO2?

a. Primary amine

b. Secondary amine

c. Tertiary amine

d. Both primary and secondary amines

Solution: Primary amine

6. Carbylamine test is given by ____________.

a. Primary amine

b. Secondary amine

c. Tertiary amine

d. Both secondary and tertiary amines

Solution: The Carbylamine test is given by Primary amine.

7. Which one of the following compounds does not react with acetyl chloride?

a. CH3 - CH2 - NH2

b. (CH3 - CH2)2NH

c. (CH3 - CH2)3N

d. C6H5 - NH2

Solution: (CH3 - CH2)3N 

8. Which of the following compounds will dissolve in aqueous NaOH after undergoing

reaction with Hinsberg reagent?

a. Ethylamine

b. Triethylamine

c. Trimethylamine

d. Diethylamine

Solution: Ethylamine

9. Identify ‘B’ in the following reactions

a. CH3 - CH2 - NH2

b. CH3 - CH2 - NO2

c. CH3 - CH2N2 +Cl- 

d. CH3 - CH2 - OH

Solution: CH3 - CH2N2 +Cl - 

10. Which of the following compounds contains azo linkage?

a. Hydrazine

b. p-Hydroxyazobenzene

c. N-Nitrosodiethylamine

d. Ethylenediamine

Solution: p-Hydroxyazobenzene