Rajiv Gandhi University of Health Sciences, Karnataka
I Year Pharm-D Degree Examination – NOV 2016
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Time: Three Hours
Max. Marks: 70 Marks
PHARMACEUTICAL ORGANIC CHEMISTRY
Q.P. CODE: 2877
Your answers should be specific to the questions asked
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Draw neat, labeled diagrams wherever necessary
LONG ESSAYS (Answer any two) 2 x 10 = 20 Marks
- Explain Bayer's strain theory of Cycloalkanes along with its merits and de-merits. Write a note on theory of strainless rings.
- Explain SN1 and SN2 reaction with emphasis on:
(a) Mechanism (b) Kinetics (c) Stereochemistry - Explain the mechanism of:
a) Dehydrohalogenation of alkyl halides
b) Chlorination of methane
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SHORT ESSAYS (Answer any six) 6 x 5 = 30 Marks
- Explain Aldol condensation with mechanism.
- Explain the basicity of amines.
- Explain the mechanism of nitration of benzene.
- Discuss Markovnikov's rule with the mechanism involved.
- What is Hoffmann rearrangement? Write its mechanism.
- Explain the dehydration of alcohols with mechanism.
- Explain the effects of substituents on the acidity of carboxylic acids.
- Write the preparation and uses of Sodium Lauryl Sulphate and Mephenesin.
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SHORT ANSWERS 10 x 2 = 20 Marks
- Which is more stable: trans-2-butene or cis-2-butene? Why?
- Write the classification of free radicals with examples.
- Write the IUPAC name of isopropyl alcohol and Neopentane.
- Which is having higher boiling point; ethanol or dimethyl ether? Why?
- What is polar protic solvent? Give two examples.
- Define the terms: “Polarity" and "Isomerism".
- What is Aldol condensation? Write the reaction.
- What is diazotisation? Write an example.
- State the uses of Ethylene chloride and Tartaric acid.
- How will you convert acetaldehyde to acetic acid?
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