Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2143606 Advanced Organic Chemistry For Technologists Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code:2143606 Date:12/12/2018
Subject Name:Advanced Organic Chemistry for Technologists
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Write short note on Markovnikov's Rule. 03
(b) Write short notes on: Racemic Mixture & Meso compounds 04
(c) Define Aromaticity. Explain Huckel rule in detail showing the behavioural
approach of different Organic molecules in proving their aromatic
characteristics.
07
Q.2 (a) State whether the following compounds are aromatic or non-aromatic
03
(b) Explain Claisen - Dieckmann condensation in details. 04
(c) Explain why,
1. Pyridine is more basic than pyrolle.
2. Pyridine is less basic than aliphatic amine.
3. Pyridine is more basic than aniline
07
OR
(c) Discuss Pinacol-Pinacolon rearrangement in detail. 07
Q.3 (a) Write a note on conformational isomerism. 03
(b) Explain Hydroboration reaction with suitable examples. 04
(c) Write detailed mechanism of SN1 & SN2 reactions with suitable examples. 07
OR
Q.3 (a) Give Oxidation reaction in detail. 03
(b) Identify enantiomeric and diasteromeric pairs from following
04
(c) Write detailed mechanism and applications of Knoevenagel condensation. 07
Q.4 (a) Write a note on: Opposite behavior of Halogen group. 03
(b) Write down electrophilic substitution reaction of Pyrrole. 04
(c) Explain detailed mechanism of Clemmensen reduction.
07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code:2143606 Date:12/12/2018
Subject Name:Advanced Organic Chemistry for Technologists
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Write short note on Markovnikov's Rule. 03
(b) Write short notes on: Racemic Mixture & Meso compounds 04
(c) Define Aromaticity. Explain Huckel rule in detail showing the behavioural
approach of different Organic molecules in proving their aromatic
characteristics.
07
Q.2 (a) State whether the following compounds are aromatic or non-aromatic
03
(b) Explain Claisen - Dieckmann condensation in details. 04
(c) Explain why,
1. Pyridine is more basic than pyrolle.
2. Pyridine is less basic than aliphatic amine.
3. Pyridine is more basic than aniline
07
OR
(c) Discuss Pinacol-Pinacolon rearrangement in detail. 07
Q.3 (a) Write a note on conformational isomerism. 03
(b) Explain Hydroboration reaction with suitable examples. 04
(c) Write detailed mechanism of SN1 & SN2 reactions with suitable examples. 07
OR
Q.3 (a) Give Oxidation reaction in detail. 03
(b) Identify enantiomeric and diasteromeric pairs from following
04
(c) Write detailed mechanism and applications of Knoevenagel condensation. 07
Q.4 (a) Write a note on: Opposite behavior of Halogen group. 03
(b) Write down electrophilic substitution reaction of Pyrrole. 04
(c) Explain detailed mechanism of Clemmensen reduction.
07
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2
OR
Q.4 (a) Show optical activity of Lactic acid. 03
(b) Explain detailed mechanism of Michael reaction. 04
(c) Write a note on aromaticity of Heterocyclic compounds. Also write Nitration,
Sulphonation and Acylation reactions of Furan.
07
Q.5 (a) Write a short notes on: Petroleum as sources of aromatic compounds 03
(b) Enlist chemical reactions of Naphthalene. 04
(c) Write detailed mechanism and applications of Leuckart reaction. 07
OR
Q.5 (a) Explain why, Nitro (-NO2 group) acts as ortho-para director. 03
(b) Write a note on Benzidine rearrangement. 04
(c) Write a note on NGP. 07
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This post was last modified on 20 February 2020