APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY Previous Years Question Paper & Answer

Course : B.Tech

Semester : SEMESTER 3

Year : 2020

Term : SEPTEMBER

Scheme : 2015 Full Time

Course Code : CH 207

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What are carbenes? Give their classification. Write an example for the cycloaddition
reaction involving carbenes.
Complete the reaction

11202

+ OsO,— ക.

PART छ
Answer any two full questions, each carries 15 marks.
In aqueous solution, the ratio of a-D-glucopyranose and B-D-glucopyranose is 36:64.

Explain the reason with structure?
Write a reaction to distinguish between glucose and fructose. Explain.
What is hydrogenation of oils? What are its drawbacks?
Write the reaction of glucose with a) Excess of phenyl hydrazine, H* ந) Tollens
reagent.
Explain the synthesis and uses of Congo red and Fluorescein dyes.
Show how would you use a Strecker synthesis to make alanine.
What are zwitter ions?
What are biodegradable polymers? Give two examples.
Explain the synthesis and any two uses of pararosaniline.
Explain the denaturation of proteins with an example.
What are detergents? What are its advantages over soaps?
What are artificial sweetners? Explain the synthesis of sorbitol.
PART C

Answer any two full questions, each carries 20 marks.
Explain the different photophysical processes with the help of Jablonski diagram?
Illustrate the following i) mechanism of photosynthesis ii) [2+2] cycloaddition

Give the product formed of the following reaction.

What are prodrugs? Discuss its importance.

Explain the classification of enzymes based on their function.

What are antibiotics? Discuss any two types of antibiotics?

Explain the chemistry of bioluminescence in fire fly? What is meant by

photosensitisation?

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