Worksheet: Amines

 

Worksheet: Amines

Class: 12 | Subject: Chemistry

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Section A: Objective Questions (1 mark each)

1. Write the IUPAC name of the compound:
   ${\text{CH}}_3{\text{NHCH}}_3$

2. Which type of amines (primary, secondary, or tertiary) will not react with Hinsberg’s reagent?

3. Identify the type of isomerism exhibited by:
   (a) Ethylamine and Dimethylamine
   (b) Propan-1-amine and Propan-2-amine

4. Arrange the following in increasing order of basicity:
   ${\text{C}}_6{\text{H}}_5{\text{NH}}_2,{\text{CH}}_3{\text{NH}}_2,({\text{CH}}_3{)}_2\text{NH}$.

5. Write the structure of N-ethylethanamine.

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Section B: Short Answer Questions (2-3 marks each)

6. Convert:
   (a) Nitrobenzene to Aniline.
   (b) Aniline to p-Bromoaniline.

7. Explain the mechanism of the reaction of ethylamine with benzoyl chloride (Hinsberg test).

8. Explain why aniline is less basic than methylamine.

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Section C: Long Answer Questions (5 marks each)

9. Describe the Hoffmann bromamide reaction with a chemical equation. Discuss its importance in organic synthesis.

10. (a) How can you distinguish between:
    i. Aniline and N-methylaniline?
    ii. Primary amine and tertiary amine?
    (b) Write a short note on the coupling reaction of amines with diazonium salts.

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Instructions for Students

• Answer all questions neatly.
• Draw structures and mechanisms wherever applicable.

ANSWERS