Download GTU BE/B.Tech 2017 Winter 3rd Sem Old 132602 Rubber Technology Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2017 Winter 3rd Sem Old 132602 Rubber Technology Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?III (OLD) EXAMINATION ? WINTER 2017
Subject Code:132602 Date:21/11/2017

Subject Name: Rubber Technology

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.

Q.1 (a) Describe in detail about Cellulose as a Natural Polymer. 07
(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

Q.3 (a) Give a short note on Axes of Orientation. 07
(b) Write in detail about Thermal transitions in polymers. 07
OR
Q.3 (a) List the methods of Orientation. Explain any two methods in detail. 07
(b) Discuss about the factors influencing the Glass Transition Temperature. 07

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
Q.4 (a) Discuss about the properties and applications of Amino Resins. 07
(b) Explain the mechanism of sorption of Inert Sorbets on polymer. 07

Q.5 (a) List the methods for the production of Vinyl Acetate monomer. Discuss any
one in detail.
07
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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?III (OLD) EXAMINATION ? WINTER 2017
Subject Code:132602 Date:21/11/2017

Subject Name: Rubber Technology

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.

Q.1 (a) Describe in detail about Cellulose as a Natural Polymer. 07
(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

Q.3 (a) Give a short note on Axes of Orientation. 07
(b) Write in detail about Thermal transitions in polymers. 07
OR
Q.3 (a) List the methods of Orientation. Explain any two methods in detail. 07
(b) Discuss about the factors influencing the Glass Transition Temperature. 07

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
Q.4 (a) Discuss about the properties and applications of Amino Resins. 07
(b) Explain the mechanism of sorption of Inert Sorbets on polymer. 07

Q.5 (a) List the methods for the production of Vinyl Acetate monomer. Discuss any
one in detail.
07
2
(b) Write a short note on oxidative degradation of polymers. 07
OR
Q.5 (a) Explain the Repee 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

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