Download GTU BE/B.Tech 2018 Winter 3rd Sem New 2133602 Polymer Chemistry Elective I Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem New 2133602 Polymer Chemistry Elective I Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2133602 Date: 28/11/2018

Subject Name: Polymer Chemistry (Elective-I)

Time: 10:30 AM TO 01:00 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) What make polymer different from other material? 03
(b) Elaborate the applications of polymers. 04
(c) Draw the chemical structure of following: i. Styrene ii. Vinyl
Chloride iii. Bakelite iv. Ethylene v. Butadiene vi. Urea vii. lactic
acid.
07

Q.2 (a) What is glass transition temperature? 03
(b) Write a short not on molecular weight distribution. 04
(c) Explain solution and bulk polymerization in detail. 07
OR
(c) Explain emulsion and suspension polymerization in detail. 07
Q.3 (a) Explain in detail degree of polymerization. 03
(b) Explain with example ionic and copolymerization. 04
(c) Elaborate LCST & UCST. 07
OR
Q.3 (a) Draw the structure of polycaprolactum, terephthalic acid, phenol
formaldehyde resin
03
(b) Differentiate between thermoplastics and thermoset polymer 04
(c) Explain crude oil distillation in detail. 07
Q.4 (a) Explain free radical kinetics. 03
(b) Explain how Mn and Mw are determined. 04
(c) Explain synthesis of caprolatum and butadiene 07
OR
Q.4 (a) What are the different engineering problems associated with bulk
and solution polymerization?
03
(b) Write a note on Gel Permeation Chromatography. 04
(c) Explain the synthesis of urea and melamine. 07
Q.5 (a) What are the different ways of expressing molecular weight of a
polymer? Give the formulas for expressing them.
03
(b) What are the different methods to determine the crystallinity in
polymers?
04
(c) Derive an expression for the rates of all the reactions involved in
anionic polymerization. Also derive expressions for degree of
polymerization in anionic polymerization
07
OR
Q.5 (a) Elaborate the end uses of polymers. 03
(b) Explain addition and condensation polymerization. 04
(c) Derive an expression for the rates of all the reactions involved in
cationic polymerization. Also derive expressions for degree of
polymerization in cationic polymerization
07
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