Subject Code: 132602
GUJARAT TECHNOLOGICAL UNIVERSITY
--- Content provided by FirstRanker.com ---
BE - SEMESTER-III (OLD) EXAMINATION — WINTER 2017
Subject Name: Rubber Technology
Date: 21/11/2017
Time: 10:30 AM to 01:00 PM
Total Marks: 70
--- Content provided by FirstRanker.com ---
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) Describe in detail about Cellulose as a Natural Polymer. 07
--- Content provided by FirstRanker.com ---
(b) Explain the detailed structure of Mature trunk of Hevea Brasiliensis tree. 07
Q.2 (a) Give the Schematic diagram of typical bud-grafting process and explain in detail. 07
(b) Discuss about the Impurities in final Polymer Composition. 07
OR
(b) “Carbon is the most important element in organic chemistry and polymer chemistry.” — Justify the statement. 07
--- Content provided by FirstRanker.com ---
Q.3 (a) Give a short note on Axes of Orientation. 07
(b) Write in detail about Thermal transitions in polymers. 07
OR
(a) List the methods of Orientation. Explain any two methods in detail. 07
(b) Discuss about the factors influencing the Glass Transition Temperature. 07
--- Content provided by FirstRanker.com ---
Q.4 (a) Explain the reaction mechanism of phenol and formaldehyde for the production of Phenolic Resins. 07
(b) List out the different methods for forming porous structure of polymer. Write in detail about any three. 07
OR
(a) Discuss about the properties and applications of Amino Resins. 07
(b) Explain the mechanism of sorption of Inert Sorbets on polymer. 07
--- Content provided by FirstRanker.com ---
Q.5 (a) List the methods for the production of Vinyl Acetate monomer. Discuss any one in detail. 07
OR
Q.5 (a) Explain the Reppe process for production of Butadiene monomer. Also list the other methods for the production of Butadiene monomer. 07
(b) Discuss in detail about Mechanical Degradation of polymer. 07
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE/B.Tech 2017 Winter Question Papers || Gujarat Technological University