Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 6th Sem New 2162604 Characterisation Of Rubber Previous Question Paper
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VI (New) EXAMINATION ? WINTER 2019
Subject Code: 2162604 Date: 11/12/2019
Subject Name: Characterisation of Rubber
Time: 02:30 PM TO 05:00 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) Why is it necessary to store the rubber product at standard conditions? Which
ISO standard is used for the same?
03
Q.1 (b) Give the different circumstances in which standard test method is used. Also
mention the classification of sources of standards.
04
Q.1 (c) With suitable diagrams, explain the various methods used to prepare test
specimen from rubber.
07
Q.2 (a) Write down the spot test to characterize the following rubbers: (1) SBR
(2) NBR
03
Q.2 (b) Write down the procedure for free sulphur determination test. 04
Q.2 (c) Explain the Bragg?s law. Give advantages and disadvantages of Scanning
Electron Microscopy (SEM).
07
OR
Q.2 (c) Explain the operation of Transmission Electron Microscopy (TEM) with
diagram showing it?s major components.
07
Q.3 (a) Define the given terms with respect to thermal analysis of rubber: (i)Peak (ii)
Base Line (iii)Heating Rate
03
Q.3 (b) Differentiate the Differential Scanning Calorimetry(DSC) and Differential
Thermal Anlaysis(DTA).
04
Q.3 (c) With Suitable examples of rubber and rubber related materials, write about the
applications of Thermogravimetric Analysis (TGA).
07
OR
Q.3 (a) Define the given terms with respect to thermal analysis of rubber: (i)Peak
Width (ii)Peak Height(iii)Peak Area
03
Q.3 (b) Write a short note on ?Thermobalance?. 04
Q.3 (c) Discuss different types of transitions observed in Dynamic Mechanical
Analysis by taking an example of EPDM rubber.
07
Q.4 (a) With schematic diagram, explain the term Rf value. 03
Q.4 (b) Explain the given features with respect to Chromatography:(i) Retention Time
(ii) Retention Volume
04
Q.4 (c) Discuss in detail about the classification of Gas Chromatography (GC). 07
OR
Q.4 (a) Which different types of columns are used in Gas Chromatographyy(GC)? 03
Q.4 (b) Explain the given features with respect to Chromatography: (i)Relative
Retention (ii) Resolution
04
Q.4 (c) Discuss in detail about the High Performance Liquid Chromatography (HPLC). 07
.
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VI (New) EXAMINATION ? WINTER 2019
Subject Code: 2162604 Date: 11/12/2019
Subject Name: Characterisation of Rubber
Time: 02:30 PM TO 05:00 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) Why is it necessary to store the rubber product at standard conditions? Which
ISO standard is used for the same?
03
Q.1 (b) Give the different circumstances in which standard test method is used. Also
mention the classification of sources of standards.
04
Q.1 (c) With suitable diagrams, explain the various methods used to prepare test
specimen from rubber.
07
Q.2 (a) Write down the spot test to characterize the following rubbers: (1) SBR
(2) NBR
03
Q.2 (b) Write down the procedure for free sulphur determination test. 04
Q.2 (c) Explain the Bragg?s law. Give advantages and disadvantages of Scanning
Electron Microscopy (SEM).
07
OR
Q.2 (c) Explain the operation of Transmission Electron Microscopy (TEM) with
diagram showing it?s major components.
07
Q.3 (a) Define the given terms with respect to thermal analysis of rubber: (i)Peak (ii)
Base Line (iii)Heating Rate
03
Q.3 (b) Differentiate the Differential Scanning Calorimetry(DSC) and Differential
Thermal Anlaysis(DTA).
04
Q.3 (c) With Suitable examples of rubber and rubber related materials, write about the
applications of Thermogravimetric Analysis (TGA).
07
OR
Q.3 (a) Define the given terms with respect to thermal analysis of rubber: (i)Peak
Width (ii)Peak Height(iii)Peak Area
03
Q.3 (b) Write a short note on ?Thermobalance?. 04
Q.3 (c) Discuss different types of transitions observed in Dynamic Mechanical
Analysis by taking an example of EPDM rubber.
07
Q.4 (a) With schematic diagram, explain the term Rf value. 03
Q.4 (b) Explain the given features with respect to Chromatography:(i) Retention Time
(ii) Retention Volume
04
Q.4 (c) Discuss in detail about the classification of Gas Chromatography (GC). 07
OR
Q.4 (a) Which different types of columns are used in Gas Chromatographyy(GC)? 03
Q.4 (b) Explain the given features with respect to Chromatography: (i)Relative
Retention (ii) Resolution
04
Q.4 (c) Discuss in detail about the High Performance Liquid Chromatography (HPLC). 07
.
Q.5
(a)
Write a brief note on ?finger print region?.
03
Q.5 (b) What do you mean by interferometer? Give advantages of Fourier Transform
Infrared Spectroscopy (FTIR) over Infrared Spectroscopy.
04
Q.5 (c) Discuss in detail about Beer-Lambet?s law. Also give its application. 07
OR
Q.5 (a) Give classification of Infrared (IR) band. 03
Q.5 (b) Discuss in detail about Nuclear Magnetic Resonance Spectroscopy(NMR). 04
Q.5 (c) Discuss the different types of transitions observed during ultraviolet
spectroscopy.
07
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This post was last modified on 20 February 2020