JNTU
JNTU B.Pharmacy I PHARMACEUTICAL ORGANIC CHEMISTRY - I Previous Question Paper (September - 2024 - R17)
i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is Isomerism?
Answer
Isomerism is the phenomenon where two or more compounds possess the same molecular formula but differ in their physical or chemical properties due to a difference in the arrangement of atoms in their molecules.
What is common system of nomenclature of organic compounds?
Answer
The common or trivial system of nomenclature names organic compounds based on their source of origin, properties, or method of preparation. It uses prefixes like 'n-' (normal), 'iso-', and 'neo-' to denote the structure of alkyl chains, rather than following strict systematic rules.
Explain the mechanism of ozonide formation.
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Give two methods of preparation of 1, 3-Butadiene.
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Explain the solubility of alcohols in water.
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What is Wurtz reaction? Give an example.
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What is Aldol condensation?
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Give the structure and uses of Vanillin.
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Give the mechanism of decarboxylation of simple acids.
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Explain applications of carboxylic acid.
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Part B
What are acyclic compound? Give examples.
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Write down structure and IUPAC name of Ethylamine and Acetaldehyde.
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What do you mean by IUPAC system of nomenclature and different class of compounds.
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Explain classification of organic compounds. Give examples.
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Explain the mechanism by which alkyl halides undergo elimination reactions and examples.
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Discuss briefly oxidation reactions of alkanes.
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Explain the addition of hydrogen bromide to propylene in accordance with Anti-Markonikov’s rule.
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Briefly discuss the chemical reactions of conjugated dienes.
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Discuss the reaction between ethanol and H2SO4 the possible products under different conditions.
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Write the mechanism of acidic dehydration of alcohol.
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Discuss factors influencing SN2 reaction.
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Describe relative reactivities of alkyl halides.
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Give the mechanism of aldol formation and dehydration of aldol both under acidic and basic condition.
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Describe conjugate addition of α-β unsaturated carbonyl compounds.
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Discuss the behavior of aldehydes and ketones towards Tollen’s reagent.
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Explain the mechanism of Perkin condensation and Crossed cannizaro reaction.
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Discuss the ring substitution reactions of amines.
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Explain the mechanism of Hoffmann elimination.
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How does the structure effect the basicity of amines.
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Write short note on Hell-Volhard Zelinsky reaction.
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