RGUHS M.Pharm 1st Year Last 10 Years 2011-2021 Question Papers || Rajiv Gandhi University of Health Sciences
PAPER II
(Revised Scheme 2)
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Q.P. CODE : 9232
Your answers should be specific to the questions asked.
Draw neat labeled diagrams wherever necessary. Answer all questions
LONG ESSAY (Answer any TWO) 2 X 20 = 40 Marks
- a) Explain in detail with mechanism about pinacol-pinacolone rearrangement.
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b) What do you mean by cine substitution? Discuss the mechanism involved with suitable examples. - a) Define free radical. Explain in detail the formation of free radical. Explain in detail reaction involving free radicals.
b) Discuss the mechanism involved in Benzoin condensation and Perkin reaction. - a) Give an account of ring expansion with appropriate examples
b) Discuss the Mechanism of Hoffmann rearrangement with suitable examples.
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SHORT ESSAY (Answer any FIVE) 5 X 10 = 50 Marks
- Write about trans - annular rearrangements with suitable examples.
- What are nitrenes? Discuss the mechanism involved in Curtius reaction Schmidt & Lossen rearrangement.
- Discuss the principle involved in phase transfer catalysis with appropriate example
- What do you mean by sigmatropic rearrangement the synthetic applications of sigmatropic rearrangement.
- Discuss the mechanism involved Diels – Alder reaction using molecular orbital method
- Write a note on combinatorial chemistry
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SHORT NOTES 2 X 5 = 10 Marks
- Discuss the formation structure and stability of Carbocations.
- Free radicals.
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