This set of Unit Processes Multiple Choice Questions & Answers (MCQs) focuses on “Amination by Reductions”.
1. Amination by reduction involves the synthesis of what by reductive methods?
a) Toluene
b) Phenols
c) Amines
d) Alkyl
View Answer
Explanation: In Amination by reduction mean the synthesis of Amine (-NH4) group by reductive methods meaning reduction.
2. Amines can be produced by the reduction of what compound?
a) Nitro
b) Oximes
c) Azoxy
d) All of the mentioned
View Answer
Explanation: Amines can be produced by reducing nitro, nitroso, hydroxylamino, azoxy, azo, and hydrazo compounds, as well as oximes, amides, nitriles, and azides.
3. Which of the following is the Tertiary amine?
a) NH3
b) R-NH2
c) R-NH-R’
d) R-N(R’)-R”
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Explanation: It is called tertiary amine because three alkly groups are attached to the ‘N’ nitrogen atom.
4. What is the formula of Methylamine?
a) CH3-NH2
b) C2H5-NH2
c) CH3-NH-CH3
d) CH3-N (CH3)- CH3
View Answer
Explanation: The following compound is called methylamine because the methyl group(-CH3) is attached to the amine group (-NH2).
5. What is the name of the following compound: C6H5-NH2?
a) Phenol
b) Cyclohexane
c) Aniline
d) Paraffin
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Explanation: The name of the above compound is Aniline because an Amine group is attached to the benzene ring.
6. Dimethylamine is a primary amine.
a) True
b) False
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Explanation: The statement is false because Dimethylamine is a Secondary amine because two methyl groups are attached to the nitrogen atom of amine group.
7. Triphenylamine is a tertiary compound.
a) True
b) False
View Answer
Explanation: The above statement is true because three phenyl groups are attached to the nitrogen of amine group.
8. What is the formula of Dimethylaniline?
a) C6H5-NH2
b) C6H5-N(CH3)2
c) C6H5-NO2
d) None of the mentioned
View Answer
Explanation: In Dimethylaniline, there are two methyl groups and an benzene group attached to the nitrogen atom on amine group.
9. What are generally prepared by ammonolysis reactions and not by reductive methods?
a) Amines
b) Paraffin
c) Oximes
d) Amides
View Answer
Explanation: Amides are prepared by the ammonolysis reaction and not by reductive methoda as it contains -CO- group attached to an amine group.
10. What do we get by hydrolysis of N-substituted amide?
a) Primary amine
b) Secondary amine
c) Tertiary amine
d) All of the mentioned
View Answer
Explanation: By the hydrolysis of amides we get amine. Similarly by reduction of nitriles, oximes we get amines.
Sanfoundry Global Education & Learning Series – Unit Processes.
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