Download GTU BE/B.Tech 2019 Summer 4th Sem New 2143606 Advanced Organic Chemistry For Technologists Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 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 ? SUMMER 2019
Subject Code:2143606 Date:25/05/2019
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 Saytzeff Rule. 03
(b) Differentiate between Enantiomers and Diastereomers. 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) Show optical activity of Tartaric acid. 03
(b) Explain Claisen - Dieckmann condensation in details. 04
(c) Explain why,
1. Pyridine is more basic than pyrrole.
2. Pyridine is less basic than aliphatic amine.
3. Pyridine is more basic than aniline
07
OR
(c) Explain detailed mechanism of MPV reduction.

07
Q.3 (a) Write a note on: Opposite behaviour of Halogen group. 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) Explain why, Methyl (-CH3 group) acts as ortho-para director. 03
(b) Discuss Pinacol-Pinacolone rearrangement in detail. 04
(c) Write a note on NGP. 07
Q.4 (a) Explain detailed mechanism of Michael reaction. 03
(b) Write down electrophilic substitution reaction of Pyrrole. 04
(c) Explain detailed mechanism of Clemmensen reduction. 07

OR
Q.4 (a) Explain only mechanism of base catalyzed Gabriel synthesis. 03
(b)

04
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2143606 Date:25/05/2019
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 Saytzeff Rule. 03
(b) Differentiate between Enantiomers and Diastereomers. 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) Show optical activity of Tartaric acid. 03
(b) Explain Claisen - Dieckmann condensation in details. 04
(c) Explain why,
1. Pyridine is more basic than pyrrole.
2. Pyridine is less basic than aliphatic amine.
3. Pyridine is more basic than aniline
07
OR
(c) Explain detailed mechanism of MPV reduction.

07
Q.3 (a) Write a note on: Opposite behaviour of Halogen group. 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) Explain why, Methyl (-CH3 group) acts as ortho-para director. 03
(b) Discuss Pinacol-Pinacolone rearrangement in detail. 04
(c) Write a note on NGP. 07
Q.4 (a) Explain detailed mechanism of Michael reaction. 03
(b) Write down electrophilic substitution reaction of Pyrrole. 04
(c) Explain detailed mechanism of Clemmensen reduction. 07

OR
Q.4 (a) Explain only mechanism of base catalyzed Gabriel synthesis. 03
(b)

04
2
(c) Write a note on aromaticity of Heterocyclic compounds. Also write
Nitration, Sulphonation and Acylation reactions of Furan.
07
Q.5 (a) State major and minor products of addition reaction of But-1-ene and HBr.
Give reactions and reasons.
03
(b) Enlist chemical reactions of Naphthalene. 04
(c) Write detailed mechanism and applications of Leuckart reaction. 07
OR

Q.5 (a) Write a short note on Geometrical Isomerism. 03
(b) Write a note on Benzidine rearrangement. 04
(c) Write detailed mechanism and applications of Knoevenagel condensation. 07



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