Organic Chemistry Questions and Answers – Preparation of Amines – 2

This set of Organic Chemistry Multiple Choice Questions & Answers (MCQs) focuses on “Preparation of Amines – 2”.

1. Which of the following reaction does not form amines?
a) RX + NH₃ →
b)

c) RCN + H₂O \(^{\underrightarrow{H^+}}\)
d) RCONH₂ + 4H \(^{\underrightarrow{LiAlH_4}}\)
View Answer

Answer: c
Explanation: Nitrile gives carboxylic acid on hydrolysis and amines on reduction.

2. Starting from propanoic acid, the following reactions were carried out, what is the compound Z?

a) CH₃−CH₂−Br
b) CH₃−CH₂−NH₂
c) CH₃-CH₂-COBr
d) CH₃−CH₂−CH₂−NH₂
View Answer

Answer: b
Explanation: Starting from propanoic acid, the following reactions were carried out, the compound is ethylamine.

3. In the given equation, what is the final product C?

a) Ammonium acetate
b) Acetamide
c) Amino methane
d) Ethanal
View Answer

Answer: c
Explanation: Carboxylic acid with PCl₅ forms acid chloride and acid chloride reacts with NH₃ to give amide which on reduction gives amine.

4. Which of the following reactions will not give primary amine?
a) CH₃CONH₂ + KOH.Br₂
b) CH₃CN + LiAlH₄
c) CH₃NC + LiAlH₄
d) CH₃CONH₂ + LiAlH₄
View Answer

Answer: c
Explanation: Nitrile on reduction gives secondary amine.

5. Gabriel’s phthalimide synthesis is used for the preparation of which amine?
a) Primary aromatic amine
b) Secondary amine
c) Primary aliphatic amine
d) Tertiary amine
View Answer

6. What will be the product of the following reaction?

a) Propanamine
b) N-methylpropaneamine
c) N, N-dimethylpropanemamine
d) Ethyl amine
View Answer

Answer: a
Explanation: Amides yield primary amines on reduction by lithium aluminium hydride.

7. What will be the product of the following reaction?

a) Propanamine
b) N-methylpropaneamine
c) N, N-dimethylpropanemamine
d) Ethyl amine
View Answer

Answer: b
Explanation: N‐substituted Amides on reduction by lithium aluminum hydride yield secondary amines.

8. What will be the product of the following reaction?

a) Propanamine
b) N-methylpropanamine
c) N, N-dimethylpropanmamine
d) Ethyl amine
View Answer

Answer: b
Explanation: N, N‐disubstituted Amides on reduction by lithium aluminum hydride yield tertiary amines.

9. Which type of amine is produced by reaction of ketones with primary amines, followed by reduction?
a) Secondary Aromatic amine
b) N-substituted amine
c) N, N-disubstituted amine
d) Primary aromatic amine
View Answer

Answer: b
Explanation: N‐substituted amines are produced by reaction of ketones with primary amines, followed by reduction.

10. Which type of amine is produced by reaction of ketones with secondary amines, followed by reduction?
a) Secondary Aromatic amine
b) N-substituted amine
c) N, N-disubstituted amine
d) Primary aromatic amine
View Answer

Answer: c
Explanation: N, N‐disubstituted amines can be produced by reaction of 2° amines with ketones followed by reduction.

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