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Rajiv Gandhi University of Health Sciences, Karnataka
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I Year Pharm-D Examination – NOVEMBER 2015
| Time: Three Hours | Max. Marks: 70 Marks |
PHARMACEUTICAL ORGANIC CHEMISTRY
Q.P. CODE: 2854
Your answers should be specific to the questions asked
Draw neat labeled diagrams wherever necessary
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LONG ESSAYS (Answer any Two) 2 x 10 = 20 Marks
- Define and classify isomerism with suitable examples.
- Give the method of preparation and uses of the following:
a) Benzyl benzoate b) Lactic Acid c) Urea d) Chlorobutol. - Define Friedel Crafts alkylation and give its mechanism and limitations. Add a note on Friedel Craft's acylation.
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SHORT ESSAYS (Answer any Six) 6 x 5 = 30 Marks
- Explain dehydration of alcohols with mechanism.
- Discuss Markonikov's rule and peroxide effect with mechanism taking one example each.
- Give the mechanism of Michael Addition.
- Write short notes on:
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a) Intermolecular forces.
b) Effect of hydrogen bonding on boiling points. - Write a note on stability of conjugated dienes.
- Explain chlorination of methane with mechanism.
- Discuss the mechanism and organic chemistry involved in bimolecular nucleophilic substitution reaction.
- What are carbocations? How are they generated? Explain the stability of carbocations.
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SHORT ANSWERS 10 x 2 = 20 Marks
- Write the resonance structure of benzene.
- What are polar solvents? Give two examples.
- Define free radical with examples.
- Give the IUPAC names of acetone and formaldehyde.
- The dipole moment of trans-dicholoroethylene is zero. Why?
- Define electrophile with examples.
- What is Hyperconjugation? Give examples.
- State the Lewis theory of acids and bases.
- Write the resonance structure of carboxylate ion.
- Give an example of Reformatsky reaction.
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