Download GTU BE/B.Tech 2018 Winter 4th Sem New 2142306 Manufacturing Of Plastics Material 2 Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2142306 Manufacturing Of Plastics Material 2 Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2142306 Date: 01/12/2018

Subject Name: Manufacturing of plastics Material-2

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 the structures of Isotactic, Syndiotactic and Atactic
PP and compare their properties.
03
(b) Explain the bulk polymerization technique along with its
advantages and disadvantages.
04
(c) List the points of difference between Addition and
Condensation polymerization.
07

Q.2 (a) Explain the monomer preparation process of Styrene. 03
(b) Compare the properties of Thermoplastics with
Thermosets.
04
(c) With a neat sketch, explain the manufacturing of PS by
the tower process.
07
OR
(c) Give the structure and list the properties and applications
of Polyacetal.
07
Q.3 (a) Define i) Crystallisation ii) Distillation iii) Absorption 03
(b) List the properties and applications of PC. 04
(c) With a neat sketch explain the process for manufacturing
of isotactic PP.
07
OR
Q.3 (a) Write the structure and list the properties of PPS. 03
(b) List the properties and applications of PVC. 04
(c) With a neat sketch explain the manufacturing of Nylon 6. 07
Q.4 (a) Compare the properties of LDPE with HDPE. 03
(b) Enlist the properties and applications of PET. 04
(c) With a neat flow diagram, explain the High Pressure
process to manufacture LDPE.
07
OR
Q.4 (a) List the applications of HDPE. 03
(b) List the properties and applications of PEEK. 04
(c) Explain the manufacturing of PC by phosgenation
process.
07
Q.5 (a) List the applications of Nylons. 03
(b) List the properties and applications of PS. 04
(c) With a neat sketch explain the manufacturing of PVC by
suspension polymerization.
07
OR

Q.5 (a) List the properties and applications of PTFE. 03
(b) Explain the manufacturing of Nylon 66. 04
(c) Draw the structure and list the properties and applications
of ABS.
07
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