Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
--- Content provided by FirstRanker.com ---
BE- SEMESTER-VII (NEW) EXAMINATION - WINTER 2020
Subject Code:2173607 Date:21/01/2021
Subject Name:Product Design Concept: Structures & Additives
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
--- Content provided by FirstRanker.com ---
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
MARKS
Q.1 (a) Define functionality and Functionality group equivalent. 03
--- Content provided by FirstRanker.com ---
(b) What do you mean by Spherullite structure? Explain with diagram. 04
(c) Explain viscometry method with the help of mark-Houwink equation. 07
Q.2 (a) Which technique is available for Tg measurement? Explain in detail. 03
(b) Give the structural features of polymeric materials. 04
(c) What is the Tg of PET? Explain effect of Tg on the properties of polymer. 07
--- Content provided by FirstRanker.com ---
Q.3 (a) Define PDI with its Significance. 03
(b) Give the classification of molecular weight determination techniques. 04
(c) Explain various effects of processing parameters on the structure of polymeric material. 07
Q.4 (a) How additives will affect the structure and properties of polymers? 03
(b) Describe the effect of molecular weight on properties of polyolefin. 04
--- Content provided by FirstRanker.com ---
(c) Suggest any additives which will enhance the plasticity of material and explain its properties as well as applications. 07
Q.5 (a) What do you mean by crystallisability? What are the factors that effect on it? 03
(b) Explain End Group Analysis method for molecular weight determination. 04
(c) Give the list of different techniques used for number average molecular weight determination and explain in detail about GPC. 07
Q.6 (a) Enlist different chemical methods used for polymer identification. 03
--- Content provided by FirstRanker.com ---
(b) Explain polymer degradation along with its types. 04
(c) Write a short note on cryoscopy method. 07
Q.7 (a) Explain basic principle of Ebullioscopy. 03
(b) Explain Gradient Elution technique. 04
(c) What do you mean by SEM? Explain its details with the help of neat diagram. 07
--- Content provided by FirstRanker.com ---
Q.8 (a) Write down the principle behind ultracentrifugation technique. 03
(b) List out various techniques available for flexible film for food applications. Explain adhesion peel test in detail. 04
(c) Write down the details of vapour pressure osmometry. 07
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University