Polymer Science & Engineering exam (WPE 101), two complete sets, from BUTEX affiliated colleges' 2022 Level-1 Term-I finals. Covers polymer classifications with PVC and PMMA structures, cationic polymerization, polycondensation types, and the fringed micelle model.
Q1
Level-1 Term-I, Final Exám-2022
Subject: Polymer Science & Engineering (Code: WPE 101)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Differentiate among polymer, monomer and oligomer.
(b) Show the structure of PVC, PMMA, Nylon and Polyester.
(c) Explain the classification of polymers with examples.
[2+4+6 = 12]
2. (a) What is initiator? Give some examples.
(b) Discuss the mechanism of Free-radical polymerization.
(c) How cationic polymerization is occurred? Explain the steps.
Q2
Level-1 Term-II, Final Exám-2022
Subject: Polymer Science and Engineering (Code: WPE 101)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Define polymer, repeat unit and monomer residue. (b) Write down two natural and two synthetic polymer with their monomer, repeat unit and chemical structure. (c) Classify polymer according to behavior towards heat. (d) Discuss functionality of monomer with example. | [3+4+2+3=12] |
2. (a) Write down the end uses of urea formaldehyde and melamine formaldehyde resin in textile processing. (b) What do you mean by initiator? Give five example of initiator with chemical structure that are used in free radical polymerization. (c) State the mechanism of step polymerization. | [3+4+5=12] |
3. (a) Distinguish between chain and step polymerization. |