University of Calicut Previous Years Question Paper & Answer

University : University of Calicut
Course : B.Sc

Semester : SEMESTER 5

Year : 2022

Term : NOVEMBER

Scheme : 2019 Full Time

Course Code : CHE 5B 07

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Section B (Short Answers)

Answer questions up to 30 marks.
Each question carries 5 marks.

How would you distinguish between 1°, 2° and 3° alcohols ?

What is Williamson’s synthesis ? How will you prepare anisole and phenetole using Williamson’s

synthesis ?
What is Reformatsky reaction ? What is its synthetic use ?
How will you distinguish pentan-2-one and pentan-3-one ?
Suggest a suitable reaction for the preparation of « halo acid. Explain using examples.
How will you prepare amines using Gabriel's phthalimide synthesis ?
Starting from ethylacetoacetate, how will you prepare succinic acid ?
(Ceiling of marks : 30)
Section C (Essay)

Answer any one question.

The question carries 10 marks.
a) Explain the mechanism of pinacol-pinacolone rearrangement.
b) Discuss the mechanism of bromination and nitration of phenol.
Write notes on:
Aldol condensation
Cannizzaro reaction
Benzoin condensation

Perkin’s reaction.
(1 x 10 = 10 marks)

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