Download GTU BE/B.Tech 2019 Winter 3rd Sem New 2132301 Introduction To Plastic Material Science Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 2132301 Introduction To Plastic Material Science Previous Question Paper

Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 2132301 Date: 28/11/2019

Subject Name: Introduction to Plastic Material Science
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) What are Functionality of Monomer and Degree of Polymerization? 03
(b) Explain Types of Polymer according to their Origin and Polymerization
process.

04
(c) Differentiate between Thermoplastic and Thermosetting Polymer. 07



Q.2 (a) Give details on: Inhibition and Retardation for Polymer 03
(b) Give the Functionality of following Monomer,
Glycerol, Ethylene Glycol, Adipic Acid , Hexamethylene Diamine
04
(c) Give Full name of LLDPE. Explain Addition Polymerization with
mechanism.
07
OR
(c) ?Thermoplastic polymer can be recycled? justified this sentence with
example.

07
Q.3 (a) Give the structure of repeating unit of following polymers: a) Butyl Rubber
b) PET c) Nylon 66.
03
(b) What is Glass Transition Temperature (Tg)? Give Tg of PVC and LDPE. 04
(c) Describe Engineering and Commodity Plastics. Give their examples. 07
OR
Q.3 (a) Explain Suspension Polymerization Technique. 03
(b) What is Tacticity in polymers? Explain briefly. 04
(c) How Crystallinity affect properties of polymer?

07
Q.4 (a) Explain Homochain and Heterochain polymers. 03
(b) What is Polydispersity? How it effect polymer?s properties? 04
(c) What is Configuration and Confirmation? Give their examples. 07
OR
Q.4 (a) What is the practical significance of polymer molecular weight? 03
(b) Explain the bulk polymerization technique. Give its disadvantages. 04
(c) Explain free radical polymerization.

07
Q.5 (a) What is the importance of Tg and its relation to HDT 03
(b) What are Organic & Inorganic polymers? Explain giving examples. 04
(c) What are Spherulites. Explain them briefly. 07
OR
Q.5 (a) Enlist the instrument used to know Crystallinity in polymers. Give any two
examples of amorphous and crystalline polymer.
03
(b) Explain Hydrogenation and Addition Reactions of Polymers. 04
(c) What is Vulcanization of Rubber? Give its benefit. 07

***********
FirstRanker.com - FirstRanker's Choice