Download GTU BE/B.Tech 2019 Summer 4th Sem New 2143607 Unit Processes In Organic Synthesis Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 4th Sem New 2143607 Unit Processes In Organic Synthesis Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2143607 Date:09/05/2019
Subject Name: Unit Processes in Organic Synthesis
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) Discuss mechanism of aromatic bromination. 03
(b) Give manufacturing of any compound using sulfonation.

04
(c) Differentiate between unit process and unit operation with example.



.
example
07

Q.2 (a) Write a short note on alkali hydrolysis. 03
(b) Explain chemistry of polymerization reactions. 04
(c) Discuss Bechamp reduction using suitable examples. 07
OR
(c) Explain in detail ?Ease of Esterification? and ?Transesterification?.

07
Q.3 (a) Discuss the formation of Nitryl ions in nitration process using mixed acids. 03
(b) Explain unit process for Amination with suitable example and process parameters. 04
(c) Describe manufacture of Aniline by Ammonolysis of Chloro benzene using flow
sheet diagram.
07
OR
Q.3 (a) Explain Van?t Hoff factor with example. 03
(b) Explain in detail utility of various agents used in aromatic chlorination. 04
(c) Discuss Suspension polymerization process in detail.

07
Q.4 (a) Give an account of various oxidizing agents. 03
(b) Define Nitric ratio and D.V.S with example. 04
(c) Draw a neat flow sheet diagram describing manufacture of Methanol. 07
OR
Q.4 (a) Write a short note on alkylating agents. 03
(b) Give a brief account of nitration of paraffinic hydrocarbon. 04
(c) Enlist various polymerization techniques. Discuss Emulsion polymerization process
with its advantages and disadvantages.
07
Q.5 (a) Write a note on PETN. 03
(b) Write a short note on sulfonation and sulfation with suitable examples. 04
(c) Discuss in detail Hydrogenolysis reactions with examples. 07
OR

Q.5 (a) Give manufacture of any one : Anisole 03
(b) Discuss Technical Hydrogenation process in detail. 04
(c) Using a neat flow sheet diagram describe manufacture of ethyl acetate by batch
process.
07

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