Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem New 2132301 Introduction To Plastic Material Science Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132301 Date: 28/11/2018
Subject Name: Introduction to Plastic Material Science
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) Draw the structures of i) PMMA ii) Polystyrene iii)
Polyvinyl alcohol.
03
(b) Differentiate between Addition and Condensation
Polymerisation.
04
(c) Give detailed classification of polymers giving suitable
examples.
07
Q.2 (a) Define giving examples i) Monomer ii) Polymer iii)
Polymerisation
03
(b) Give the functionality of the following i) CH 3COOH ii)
CH3NCO iii) HOCH2CH2OH iv) H2N
CH2(CH2)4CH2NH2
04
(c) Write a short note on Free Radical Polymerisation. 07
OR
(c) Explain coordination Polymerisation technique. 07
Q.3 (a) Define Initaitors. List any three initiators used for free
radical polymerization.
03
(b) What is the molecular weight of PE if the no. of repeating
units is 1200?
04
(c) Differentiate low molecular weight compounds and
polymers.
07
OR
Q.3 (a) Explain briefly spherulites. 03
(b) Write a short note on Inhibitors. 04
(c) Explain linear, branched and cross linked polymer with
suitable example
07
Q.4 (a) Explain the relation between Tg & molecular weight. 03
(b) Explain Suspension polymerization technique. 04
(c) Write a brief note on functionality of polymers. Explain
giving examples.
07
OR
Q.4 (a) What is tacticity in polymers? Explain briefly. 03
(b) Explain giving examples the Acidolysis and Aminolysis
reactions.
04
(c) Explain factors affecting crystallisability in polymers. 07
Q.5 (a) Discuss Polycondensation reaction of ethylene glycol and
adipic acid to form polyesters.
03
(b) Explain the bulk polymerization technique with its
advantages & disadvantages
04
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132301 Date: 28/11/2018
Subject Name: Introduction to Plastic Material Science
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) Draw the structures of i) PMMA ii) Polystyrene iii)
Polyvinyl alcohol.
03
(b) Differentiate between Addition and Condensation
Polymerisation.
04
(c) Give detailed classification of polymers giving suitable
examples.
07
Q.2 (a) Define giving examples i) Monomer ii) Polymer iii)
Polymerisation
03
(b) Give the functionality of the following i) CH 3COOH ii)
CH3NCO iii) HOCH2CH2OH iv) H2N
CH2(CH2)4CH2NH2
04
(c) Write a short note on Free Radical Polymerisation. 07
OR
(c) Explain coordination Polymerisation technique. 07
Q.3 (a) Define Initaitors. List any three initiators used for free
radical polymerization.
03
(b) What is the molecular weight of PE if the no. of repeating
units is 1200?
04
(c) Differentiate low molecular weight compounds and
polymers.
07
OR
Q.3 (a) Explain briefly spherulites. 03
(b) Write a short note on Inhibitors. 04
(c) Explain linear, branched and cross linked polymer with
suitable example
07
Q.4 (a) Explain the relation between Tg & molecular weight. 03
(b) Explain Suspension polymerization technique. 04
(c) Write a brief note on functionality of polymers. Explain
giving examples.
07
OR
Q.4 (a) What is tacticity in polymers? Explain briefly. 03
(b) Explain giving examples the Acidolysis and Aminolysis
reactions.
04
(c) Explain factors affecting crystallisability in polymers. 07
Q.5 (a) Discuss Polycondensation reaction of ethylene glycol and
adipic acid to form polyesters.
03
(b) Explain the bulk polymerization technique with its
advantages & disadvantages
04
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2
(c) Define: Glass transition temperature. Explain factors
influencing the Glass transition temperature with suitable
examples.
07
OR
Q.5 (a) Explain Geometric Isomerism in polymers. 03
(b) Explain the relationship between Tg and Plasticisers. 04
(c) Differentiate between crystalline and amorphous
polymers.
07
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This post was last modified on 20 February 2020