Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 7th Sem New 2173607 Semester ?Vii New Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2173607 Date: 19/11/2018
Subject Name: Product Design Concept: Structures & Additives
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.
MARK
S
Q.1 (a) Draw the structure of following (a) PMMA (b) ABS (c) PTT 03
(b) Define: (a) PDI (b) Refractive Index (c) Degree of crystallinity 04
(c) Explain in detail about any one method of number average
molecular weight determination.
07
Q.2 (a) Explain Ostwald viscometer with neat sketch. 03
(b) Write short note on Cryoscopy. 04
(c) Explain Polymer degradation. 07
OR
(c) What are different processing parameters for polymers and
rubbers? Describe the effect of temperature on the structure of
polymer.
07
Q.3 (a) Write a note on Spherulite structure. 03
(b) What do you mean by chain flexibility? Explain with example. 04
(c) Explain factors affecting glass transition temperature 07
OR
Q.3 (a) Give three examples of Antioxidants. 03
(b) Explain plasticizers along with its types and examples. 04
(c) Write a short note on role of Additives in the field of polymer
and rubber technology.
07
Q.4 (a) Mention different Phases of additives with brief explanation. 03
(b) List out different types of additives and briefly explain about
reinforcing agents.
04
(c) Write a detail note on Thermogravimetric Analysis (TGA) 07
OR
Q.4 (a) Short note: Membrane osmometry. 03
(b) Explain the effect of molecular weight on the properties of
Polyolefins.
04
(c) Describes the various method of flexible film testing for food
and explain any one of them.
07
Q.5 (a) Explain about permeability testing method. 03
(b) What do you mean by XRD? 04
(c) Enlist different chemical methods for Identification of
polymer and give the details of tests perform for LDPE.
07
OR
FirstRanker.com - FirstRanker's Choice
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2173607 Date: 19/11/2018
Subject Name: Product Design Concept: Structures & Additives
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.
MARK
S
Q.1 (a) Draw the structure of following (a) PMMA (b) ABS (c) PTT 03
(b) Define: (a) PDI (b) Refractive Index (c) Degree of crystallinity 04
(c) Explain in detail about any one method of number average
molecular weight determination.
07
Q.2 (a) Explain Ostwald viscometer with neat sketch. 03
(b) Write short note on Cryoscopy. 04
(c) Explain Polymer degradation. 07
OR
(c) What are different processing parameters for polymers and
rubbers? Describe the effect of temperature on the structure of
polymer.
07
Q.3 (a) Write a note on Spherulite structure. 03
(b) What do you mean by chain flexibility? Explain with example. 04
(c) Explain factors affecting glass transition temperature 07
OR
Q.3 (a) Give three examples of Antioxidants. 03
(b) Explain plasticizers along with its types and examples. 04
(c) Write a short note on role of Additives in the field of polymer
and rubber technology.
07
Q.4 (a) Mention different Phases of additives with brief explanation. 03
(b) List out different types of additives and briefly explain about
reinforcing agents.
04
(c) Write a detail note on Thermogravimetric Analysis (TGA) 07
OR
Q.4 (a) Short note: Membrane osmometry. 03
(b) Explain the effect of molecular weight on the properties of
Polyolefins.
04
(c) Describes the various method of flexible film testing for food
and explain any one of them.
07
Q.5 (a) Explain about permeability testing method. 03
(b) What do you mean by XRD? 04
(c) Enlist different chemical methods for Identification of
polymer and give the details of tests perform for LDPE.
07
OR
2
Q.5 (a) What do you mean by microscopy? Give the name of tests
which uses electron as a source.
03
(b) Write down advantages and disadvantages of SEM and CEM. 04
(c) Explain in brief about SEM. 07
*************
FirstRanker.com - FirstRanker's Choice
This post was last modified on 20 February 2020