JNTU
JNTU B.Pharmacy I Year PHARMACEUTICAL ORGANIC CHEMISTRY - I Previous Question Paper (June/July - 2018 - R17)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
PART - A
Write the structure for 1,4-pentadiene and isoprene.
Answer
1,4-pentadiene: CH2=CH-CH2-CH=CH2
Isoprene (2-methyl-1,3-butadiene): CH2=C(CH3)-CH=CH2
Write the structural isomers of butane.
Answer
Butane has two structural isomers:
- n-Butane: CH3-CH2-CH2-CH3
- Isobutane (2-methylpropane): CH3-CH(CH3)-CH3
Explain stability of carbocations.
Answer
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Write the structure and uses of chlorobutanol and cetosteryl alcohol.
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Write the differentiate test for aldehydes and ketones.
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Write the structure and uses of Amphetamine and benzyl benzoate.
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Explain the effect of peroxides on addition reactions.
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Write the structure and uses of chloraldehyde.
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Draw the structure of lactic acid and write the use of it.
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Write the qualitative test for ethanolamine.
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PART - B
Classify the organic compounds.
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Write the common and IUPAC nomenclature for alkynes and amines.
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Write the common and IUPAC nomenclature for carbocyclic compounds.
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Define isomerism. Explain the structural isomerism of alkanes and alkyl halides.
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What are elimination reactions? Explain mechanism and factors effecting the elimination type of reactions.
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Explain free radical reactions of methane.
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What are addition reactions? Explain 1,4-addition reactions of alkadienes.
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Explain the stability of alkenes and alkadienes.
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Explain nuleophilic substitution type of reactions for alkyl halides and factors effecting the reactions.
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Explain the qualitative tests to differentiate alcohols.
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Write the structure and uses of ethyl alcohol, iodoform, benzyl alcohol and ethyl chloride.
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Explain in detail about Perkin condensation.
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Explain nucleophilic addition reactions of carbonyl compounds.
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Explain in detail about Cannizzaro reaction.
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Write the structure and uses of paraldehyde and hexamine.
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Explain the basicity of amines and effect of substituent’s on basicity.
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Explain the qualitative test for amines.
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Explain the qualitative test for Carboxylic acids.
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Explain the inductive effect and effect of substituent’s on acidity of carboxylic acids.
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