12th Chemistry In English

12th Board Exam Chemistry VVI Objective Question Amines Chapter


13. AMINES


1. Which of the following is the strongest base ? 

(A) NH3

(B) CH3 – NH2

(C) (CH3)2 – NH

(D) (CH3)3 – N

Answer :- (B)

2. Number of pi (π) bonds in aniline is : 

(A) 0

(B) 1

(C) 2

(D) 3 

Answer :- (D)

3. -CONH2 group is known as: 

(A) Amido group 

(B) Amino group

(c) Imino group 

(D) Carbyl amine

Answer :- (A)

4. Primary and secondary amines react with acid chloride or acid anhydride to form

(A) tertiaryammonium salts

(B) substituted amides 

(C) diazonium salts

(D) nitro compounds

Answer :- (B)

5. The hybridisation of N in NH3 is :

(A) sp3

(B) sp2

(C) sp

(D) d2sp3

Answer :- (A)

6. Ammonia changes the moist red litmus paper into : 

(A) Blue 

(B) Green

(C) Black 

(D) White

Answer :- (A)

7. The gas evolved when methylamine reacts with nitrous acid is …..

(A) NH3

(B) N2

(C) H2

(D) C2H6

Answer :- (B)

8. Reduction of aromatic nitro compounds using Fe and HCI gives …….

(A) aromatic oxime

(B) ‘aromatic hydrocarbon 

(C) aromatic primary amine

(D) aromatic amide

Answer :- (C)

9. Acid anhydrides on reaction with primary amines give 

(A) amide 

(B) imide

(C) secondary amine

(D) imine

Answer :- (A)

10. CH3CH2NH2 is known as:

(A) Ethyl amine

(B) Propyl amine

(C) Methyl amine 

(D) Ammonia

Answer :- (A)

11. Which of the following compounds will not undergo azo coupling reaction with benzene diazonium chloride?

(A) Anline 

(B) Phenol

(C) Anisole 

(D) Nitrobenzene

Answer :- (D)

12. Aniline reacts with Acetaldehyde to form : 

(A) Carbylamines 

(B) Nitrobenzene

(C) Imine 

(D) Schifs base

Answer :- (D)

13. formula of benzene is : 

(A) CH

(B) C2H

(C) C6H6 

(D) None

Answer :- (C)

14. A compound on hydrolysis give 1°-amine. The compound is 

(A) Anilide 

(B) amide

(C) cyanide 

(D) None 

Answer :- (B)

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