Here are most important & frequently asked Board-exam questions from
Class 12 Chemistry – Chapter: Amines
(NCERT-based, very exam-oriented)
Amines – Most Important Questions (Board Focused)
1–2 Mark Questions
1. Define amines. Write the general formula of aliphatic amines.
2. Classify amines on the basis of the number of alkyl/aryl groups attached to nitrogen.
3. Why are amines basic in nature?
4. Arrange the following in increasing order of basic strength:
aniline, ammonia, methylamine.
5. What is meant by quaternary ammonium salts?
3–4 Mark Questions
1. Explain Hinsberg’s test for distinguishing primary, secondary, and tertiary amines.
2. Write the method of preparation of primary amines using Gabriel phthalimide synthesis.
3. How can aniline be prepared from nitrobenzene? Write the chemical equation.
4. Explain basic strength of amines in aqueous solution (order and reason).
5. Write chemical reactions of amines with nitrous acid (for 1°, 2°, and 3° amines).
5 Mark / Long Answer Questions
1. Describe Hoffmann bromamide reaction. Write its mechanism and one use.
2. Explain the preparation, properties, and uses of aniline.
3. Discuss the structure and bonding in amines. Why is ammonia pyramidal?
4. How are amines distinguished from amides and nitro compounds?
5. Write short notes on:
a) Diazotization reaction
b) Coupling reaction of diazonium salts
Very Important Numericals / Conversions
1. Convert:
a) Nitrobenzene → Aniline
b) Benzene diazonium chloride → Phenol
2. Write IUPAC names of given amines (board pattern).
3. Predict products of reactions of aniline with bromine water and acetic anhydride.
Frequently Asked Reason-Based Questions
1. Why is aniline less basic than methylamine?
2. Why do amines have higher boiling points than hydrocarbons of comparable molecular mass?
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