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How carbenes are generated? Give the classification of carbene and write one
example for cyclopropanation.
Complete the reaction sequence
௦
ചി பெப்‌ ‏م‎ HCl ©
٢و٥‎ CH,

What is the product of the reaction? Justify your answer.

Br

HC © CH

५ லா” 1) NaOH, 300°C, 170atm
7 2) ഠ്‌
HC

Compare the aromaticity and basicity of pyrrole and pyridine.
KMnO, can be mixed with benzene in the presence of a special reagent 10
produce purple benzene. Identify the reagent and explain the chemistry.
Describe SN! reaction with an example. Explain the stereochemistry of this
reaction.
PART ‏تا‎

Answer any two full questions, each carries 15 marks.
An organic compound A on treatment with a mixture of NH4Cl and KCN gives B
which on hydrolysis with acid gives an amino acid having the following

structure. Identify A and B.

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HO

Explain the terms isoelectric point and zwitter ion with example.

Describe the types of detergents. Explain the cleansing action of detergent.

Give the structure and synthesis of sorbital? What is its use?

Draw the conformation of a-glucose and B-glucose. Compare the stability of
these saccharides.

Write stepwise reactions of glucose with phenyl hydrazine. Why phenyl
hydrazine react only with adjacent functional groups of glucose?

Give the classification of bio-polymers with suitable examples.

Describe the structure and use of malathion and transfluthrin.

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