Amines - Preparation & Properties
Q. What is the effect of increasing the number of alkyl groups on the basicity of amines?
-
A.
Increases basicity
-
B.
Decreases basicity
-
C.
No effect
-
D.
Depends on the solvent
Solution
Increasing the number of alkyl groups generally increases the basicity of amines due to the electron-donating effect.
Correct Answer: A — Increases basicity
Learn More →
Q. What is the IUPAC name of the compound CH3-CH2-NH2?
-
A.
Ethylamine
-
B.
Propylamine
-
C.
Dimethylamine
-
D.
Isopropylamine
Solution
The compound CH3-CH2-NH2 is named ethylamine according to IUPAC nomenclature.
Correct Answer: A — Ethylamine
Learn More →
Q. What is the main functional group present in amines?
-
A.
Hydroxyl group
-
B.
Carboxyl group
-
C.
Amino group
-
D.
Carbonyl group
Solution
The main functional group present in amines is the amino group (-NH2).
Correct Answer: C — Amino group
Learn More →
Q. What is the main product when an amine reacts with a carboxylic acid?
-
A.
Amide
-
B.
Ester
-
C.
Alcohol
-
D.
Aldehyde
Solution
The main product of the reaction between an amine and a carboxylic acid is an amide.
Correct Answer: A — Amide
Learn More →
Q. What is the product of the reaction between an amine and an alkyl halide?
-
A.
Amide
-
B.
Quaternary ammonium salt
-
C.
Nitrile
-
D.
Alcohol
Solution
The reaction between an amine and an alkyl halide typically produces a quaternary ammonium salt.
Correct Answer: B — Quaternary ammonium salt
Learn More →
Q. What is the product of the reaction of an amine with nitrous acid?
-
A.
Diazonium salt
-
B.
Amide
-
C.
Alcohol
-
D.
Aldehyde
Solution
The reaction of an amine with nitrous acid produces a diazonium salt.
Correct Answer: A — Diazonium salt
Learn More →
Q. What type of reaction occurs when an amine reacts with a haloalkane?
-
A.
Nucleophilic substitution
-
B.
Electrophilic addition
-
C.
Elimination
-
D.
Redox
Solution
The reaction between an amine and a haloalkane is a nucleophilic substitution reaction.
Correct Answer: A — Nucleophilic substitution
Learn More →
Q. Which of the following compounds is a secondary amine?
-
A.
CH3-NH2
-
B.
CH3-CH2-NH-CH3
-
C.
CH3-CH2-CH2-NH2
-
D.
NH3
Solution
The compound CH3-CH2-NH-CH3 is a secondary amine as it has two alkyl groups attached to the nitrogen.
Correct Answer: B — CH3-CH2-NH-CH3
Learn More →
Q. Which of the following is a characteristic property of amines?
-
A.
They are acidic
-
B.
They have a fishy odor
-
C.
They are non-polar
-
D.
They do not form hydrogen bonds
Solution
Amines typically have a fishy odor due to their structure and are known for their ability to form hydrogen bonds.
Correct Answer: B — They have a fishy odor
Learn More →
Q. Which of the following is a method for the preparation of aromatic amines?
-
A.
Reduction of nitro compounds
-
B.
Hydrolysis of nitriles
-
C.
Alkylation of aniline
-
D.
Dehydration of amides
Solution
Aromatic amines can be prepared by the reduction of nitro compounds.
Correct Answer: A — Reduction of nitro compounds
Learn More →
Q. Which of the following methods can be used to prepare primary amines?
-
A.
Reduction of nitriles
-
B.
Hydrolysis of amides
-
C.
Alkylation of ammonia
-
D.
All of the above
Solution
Primary amines can be prepared by the reduction of nitriles, hydrolysis of amides, and alkylation of ammonia.
Correct Answer: D — All of the above
Learn More →
Showing 1 to 11 of 11 (1 Pages)