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Seat No.: Enrolment No.GUJARAT TECHNOLOGICAL UNIVERSITY
B.PHARM - SEMESTER - 3- EXAMINATION -WINTER - 2018
Subject Code: BP301TP Date: 30/11/2018
Subject Name: Pharmaceutical Organic Chemistry 11
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Time: 10:30 AM TO 01:30 PM Total Marks: 80Instructions:
1. Attempt any five questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
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Q.1 (a) How alcohols differ from phenol? Explain structure of benzene based on chemical properties. 06
(b) Explain this term “Aqueous solution of phenol is more acidic than alcohol ” 05
(c) Notes on 05
a) Aromatic amine is less basic than aliphatic amine and ammonia
b) Cyclopropane is more prone to undergo ring opening reaction than cyclobutane.
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Q.2 (a) Explain hydrogenation of oil with diagram. Discuss significance and principal of acid value and saponification value. 06
(b) What is the proof for the presence of two fused rings in naphthalene? Explain about Haworth synthesis. 05
(c) Notes on inductive group and its directing effect in monosubstituated benzene. 05
Q.3 (a) Write down sulphonation, Friedel-Crafts acylation, reduction and oxidation reaction of naphthalene. 06
(b) Explain effect of substituents on acidity of phenol. 05
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(c) Notes on structure and stability of benzene. 05Q.4 (a) What are synthetic uses of aryl diazonium salts? 06
(b) Discuss Baeyer strain theory using concept of angle strain. Limitation of Baeyer strain theory. 05
(c) Notes on 05
a) Why is chair conformation of cyclohexane more stable than boat Form
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b) Theory of strainless rings.Q.5 (a) Explant Haworth synthesis for anthracene. Explain chemical reaction involve in anthracene. 06
(b) Write down structure and uses of DDT, BHC and Chloramine. 05
(c) Explain briefly about electrophilic substitution reaction of benzene. 05
Q.6 (a) How will you convert phenol in to (a) Benzene (b) Phenyl acetate (c) Anisole (d) Phenetole (e) Salicylaldehyde (f) P- Hydroxyazobenzene 06
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(b) Explain effect of substituents on acidity of Aromatic acids. 05(c) Write down structure and uses of phenol, cresol and resorcinol. 05
Q.7 (a) What is aromaticity? Write down characteristic in aromatic benzene. Write down method of preparation of benzene. 06
(b) How can you prepare phenol by Dow and Cumene process? 05
(c) Write down reaction involve in Cyclopropane and cyclobutane. 05
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