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FIFTH SEMESTER U.G. DEGREE EXAMINATION, NOVEMBER 2021

(CUCBCSS-UG)
Chemistry
CHE 5B 07—ORGANIC CHEMISTRY - II

Time: Three Hours Maximum : 80 Marks

ಠಾ ಉತ್ತ ಬನ ‏س‎

14449

Part A
Answer all questions.

Each question carries 1 mark.

Reaction of potassium-t-butoxide with methyl iodide gives

. Structure of Pyridine is represented as

Dibenzyl Ether reacts with Phenyl Li, followed by acid hydrolysis to form benzyl phenyl
carbinol. This reaction is known as

The number of structural isomers of alcohols with molecular formula C,H,OH is
Luca’s test is used to determine the type of

Oxidation of alkenes with pertrifluoro acetic acid forms

. The appearance of Silver mirror in Tollen’s test indicate the presence of

Hinsberg reagent is
Nitrobenzene when reduced with Zn + NaOH gives
Carbyl] amine test is a diagnostic test for

(10 x 1 = 10 marks)

Part B
Answer any ten questions.

Each question carries 2 marks.
Explain why an Alkyl halide is more reactive than Vinyl] chloride.
How is methyl magnesium iodide is prepared? Give one use of Grignard reagent.
Explain why phenol is more acidic than ethy] alcohol.
Explain Claisen rearrangement with mechanism.
Give an account on the mechanism of aldol condensation.

Discuss the structure of Cabonylate anion.

Turn over