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Seat No: Enrolment No:
GUJARAT TECHNOLOGICAL UNIVERSITY
B. Pharm. - SEMESTER-3 EXAMINATION - SUMMER -2018
Subject Code: 230003 Date: 09/05/2018
Subject Name: Pharmaceutical Chemistry - 111
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Time: 02:30 PM TO 05:30 PM Total Marks: 80
Instructions:
- Attempt any five questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Method of preparation of Alkene. 06
(b) Write a note on carbocation. 05
(c) Define: 1) Hyperconjugation 2) Molecular formula 3) Emperical formula 05 4) Carbanion 5) Geometrical isomers
Q.2 (a) Write a note on Kjeldahl’s method-for Nitrogen estimation. 06
(b) Define Hybridization. Explain in detail Hybrid orbitals with examples. 05
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(c) Explain: Sigmatropic reaction: 05
Q.3 (a) Outline difference between SN1 and SN2 reactions of alkyl halides. 06
(b) Explain: 1) Aldol condensation 2) Neighbouring group effect 05
(c) Give Williamson synthesis of ether. 05
Q.4 (a) Define the following: 06
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- Markonikov’s rule
- Ozonolysis
- Peroxide effect
(b) What are epoxides? Give the methods for preparation of epoxides. 05
(c) Explain: Chlorination of Alkane. 05
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Q.5 (a) Give chemical reactions of the following: 1) Alkylhalides 2) Alkynes 3) 06 Alcohols
(b) Write a note on Diels Alder reaction. 05
Q.5 (c) Give Structural formula for the following: 05
- Cinnamic acid
- Thiourea
- 2-methoxypentane
- 2- methyl-2-pentene
- 1, 4 —hexadiene.
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Q.6 (a) Discuss synthesis of 1°, 2°, 3° alcohol using Grignard reagent with mechanism. 06
(b) Write note on Hydrogen bonding. 05
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(c) Differentiate between BMO and ABMO. 05
Q.7 (a) Discuss quantitative estimation of carbon and hydrogen in organic compound. 06
(b) Differentiate between E1 and E2 mechanism of elimination. 05
(c) Write a note on nitrenes. 05
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This download link is referred from the post: GTU B.Pharma 2018 Summer Question Papers || Gujarat Technological University
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