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Amines JENPAS MCQ & Practice Questions

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Amines Revision Guide for JENPAS Chemistry

Amines is part of JENPAS Chemistry preparation. A strong revision plan should combine concept review with exam-style questions so that definitions, relationships, calculations and exceptions are recalled accurately.

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Important Topics

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  • Important equations or relationships
  • Common applications and examples
  • Frequently confused concepts
  • Exam-style multiple-choice questions
  • Error review and targeted revision

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What to practise in Amines

Concept Revision

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Top 20 Amines MCQs with Answers

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JENPAS Chemistry · Amines · Very Very Hard

1. Amines are derivatives of ammonia in which one or more H atoms are replaced by:

  • A. Oxygen atoms
  • B. Metal ions
  • C. Alkyl or aryl groups
  • D. Halogens only
Answer: C
Explanation: Amines are commonly viewed as derivatives of NH3.

JENPAS Chemistry · Amines · Very Very Hard

2. A primary amine contains nitrogen bonded to:

  • A. No carbon groups
  • B. One carbon group
  • C. Two carbon groups
  • D. Three carbon groups
Answer: B
Explanation: Primary amines have the general form RNH2.

JENPAS Chemistry · Amines · Very Very Hard

3. A secondary amine has nitrogen bonded to:

  • A. Two carbon groups
  • B. One carbon group
  • C. Three carbon groups
  • D. Four carbon groups
Answer: A
Explanation: Secondary amines have the form R2NH.

JENPAS Chemistry · Amines · Very Very Hard

4. A tertiary amine has nitrogen bonded to:

  • A. One carbon group
  • B. Two carbon groups
  • C. No carbon groups
  • D. Three carbon groups
Answer: D
Explanation: Tertiary amines have the form R3N.

JENPAS Chemistry · Amines · Very Very Hard

5. The IUPAC name of CH3NH2 is:

  • A. Methyl nitrite
  • B. Methanolamine
  • C. Methanamine
  • D. Methanamide
Answer: C
Explanation: CH3NH2 is methanamine.

JENPAS Chemistry · Amines · Very Very Hard

6. The IUPAC name of C2H5NH2 is:

  • A. Ethyl nitrite
  • B. Ethanamine
  • C. Ethanamide
  • D. Ethanimine
Answer: B
Explanation: C2H5NH2 is ethanamine.

JENPAS Chemistry · Amines · Very Very Hard

7. Aniline is also called:

  • A. Benzenamine
  • B. Benzamide
  • C. Phenolamine
  • D. Nitrobenzene
Answer: A
Explanation: The IUPAC retained/general name is benzenamine/aniline.

JENPAS Chemistry · Amines · Very Very Hard

8. The nitrogen atom in simple amines is approximately:

  • A. sp2 hybridised
  • B. sp hybridised
  • C. dsp2 hybridised
  • D. sp3 hybridised
Answer: D
Explanation: Three sigma bonds and one lone pair give approximately sp3 hybridisation.

JENPAS Chemistry · Amines · Very Very Hard

9. The shape around nitrogen in a simple amine is commonly:

  • A. Linear
  • B. Tetrahedral with four bonds
  • C. Trigonal pyramidal
  • D. Trigonal planar
Answer: C
Explanation: A lone pair makes the molecular geometry pyramidal.

JENPAS Chemistry · Amines · Very Very Hard

10. Amines act as Lewis bases because nitrogen possesses:

  • A. An empty s orbital only
  • B. A lone pair of electrons
  • C. A positive charge
  • D. No valence electrons
Answer: B
Explanation: The nitrogen lone pair can be donated to an electrophile.

JENPAS Chemistry · Amines · Very Very Hard

11. Amines act as Brønsted bases because they can:

  • A. Accept a proton
  • B. Donate a proton only
  • C. Accept electrons only
  • D. Release OH- directly always
Answer: A
Explanation: The lone pair accepts H+ to form an ammonium ion.

JENPAS Chemistry · Amines · Very Very Hard

12. Aliphatic amines are generally more basic than ammonia because alkyl groups show:

  • A. -I effect
  • B. -M effect
  • C. No electronic effect
  • D. +I effect
Answer: D
Explanation: Alkyl groups increase electron density on nitrogen.

JENPAS Chemistry · Amines · Very Very Hard

13. Aniline is less basic than ammonia mainly because its lone pair is:

  • A. Located on carbon
  • B. Used in an N-H bond
  • C. Delocalised into the benzene ring
  • D. Completely absent
Answer: C
Explanation: Resonance makes the lone pair less available for protonation.

JENPAS Chemistry · Amines · Very Very Hard

14. Electron-withdrawing groups on aniline generally:

  • A. Make it strongly acidic
  • B. Decrease basicity
  • C. Increase basicity
  • D. Have no effect
Answer: B
Explanation: They reduce electron density on nitrogen.

JENPAS Chemistry · Amines · Very Very Hard

15. Electron-donating groups on aniline generally:

  • A. Increase basicity
  • B. Decrease basicity
  • C. Destroy the lone pair
  • D. Have no effect
Answer: A
Explanation: Electron donation makes the nitrogen lone pair more available.

JENPAS Chemistry · Amines · Very Very Hard

16. Lower aliphatic amines are water-soluble mainly because of:

  • A. Metallic bonding
  • B. Ionic lattice formation only
  • C. Complete nonpolarity
  • D. Hydrogen bonding with water
Answer: D
Explanation: Amines can hydrogen-bond with water.

JENPAS Chemistry · Amines · Very Very Hard

17. Primary and secondary amines can form intermolecular hydrogen bonds because they contain:

  • A. No lone pairs
  • B. A carbonyl group
  • C. N-H bonds
  • D. Only C-H bonds
Answer: C
Explanation: N-H groups can participate in hydrogen bonding.

JENPAS Chemistry · Amines · Very Very Hard

18. Tertiary amines cannot form N-H hydrogen bonds among themselves because they:

  • A. Contain oxygen
  • B. Lack N-H bonds
  • C. Lack nitrogen
  • D. Are ionic solids
Answer: B
Explanation: Tertiary amines have no hydrogen attached to nitrogen.

JENPAS Chemistry · Amines · Very Very Hard

19. Reduction of nitrobenzene gives:

  • A. Aniline
  • B. Phenol
  • C. Benzene
  • D. Benzoic acid
Answer: A
Explanation: Nitrobenzene is reduced to aniline.

JENPAS Chemistry · Amines · Very Very Hard

20. Reduction of a nitrile R-CN gives generally:

  • A. Secondary amine
  • B. Tertiary amine
  • C. Amide only
  • D. Primary amine
Answer: D
Explanation: Hydrogenation/reduction of nitriles yields RCH2NH2.

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Amines Practice Tests

Amines Frequently Asked Questions

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