Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem New 2132601 Basic Rubber Science Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?III (New) EXAMINATION ? WINTER 2018
Subject Code:2132601 Date:01/12/2018
Subject Name:Basic Rubber Science
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) What do you mean by R-class rubber? Give its two examples with their
structures.
03
(b) Write down the general rules for polymer solubility. 04
(c) Discuss the conditions which are necessary for rubber like elasticity in
polymers.
07
Q.2 (a) Give the classification of polymer based on its structure with suitable
examples.
03
(b) Differentiate the chain growth polymerization and step growth
polymerization.
04
(c) Discuss in detail about the propagation step with respect to free radical
polymerization.
07
OR
(c) Write a short note on emulsion polymerization technique. 07
Q.3 (a) How you differentiate the terms ?density? and ?relative density?? 03
(b) Define the term ?friction?. Give the classification and effects associated
with it.
04
(c) Discuss about the characteristics features of sinusoidal vibrations. 07
OR
Q.3 (a) State the laws of floatation. 03
(b) What do you mean by shape factor? Show the steps to measure shape
factor for rectangular block.
04
(c) Discuss in detail about the effect of compounding in transmissibility. 07
Q.4 (a) State the Fourier?s law of heat conduction with its mathematical
expression.
03
(b) What is the meaning of ?Convection?? Write about the classification of
it.
04
(c) Write about the different modes of mass transfer. And write the
different applications involving it.
07
OR
Q.4 (a) Write about ?Thermal conductivity? with its unit. 03
(b) Discuss in brief about absorptivity, reflectivity and transmissivity. 04
(c) Derive the equations for mass and molar concentrations with ideal gas
mixture theory.
07
Q.5 (a) Write about the Tyndall effect exhibited by colloidal solution. 03
(b) Give any four differences between True solutions and Colloidal
solutions.
04
(c) Write a short note on Pigment. 07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?III (New) EXAMINATION ? WINTER 2018
Subject Code:2132601 Date:01/12/2018
Subject Name:Basic Rubber Science
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) What do you mean by R-class rubber? Give its two examples with their
structures.
03
(b) Write down the general rules for polymer solubility. 04
(c) Discuss the conditions which are necessary for rubber like elasticity in
polymers.
07
Q.2 (a) Give the classification of polymer based on its structure with suitable
examples.
03
(b) Differentiate the chain growth polymerization and step growth
polymerization.
04
(c) Discuss in detail about the propagation step with respect to free radical
polymerization.
07
OR
(c) Write a short note on emulsion polymerization technique. 07
Q.3 (a) How you differentiate the terms ?density? and ?relative density?? 03
(b) Define the term ?friction?. Give the classification and effects associated
with it.
04
(c) Discuss about the characteristics features of sinusoidal vibrations. 07
OR
Q.3 (a) State the laws of floatation. 03
(b) What do you mean by shape factor? Show the steps to measure shape
factor for rectangular block.
04
(c) Discuss in detail about the effect of compounding in transmissibility. 07
Q.4 (a) State the Fourier?s law of heat conduction with its mathematical
expression.
03
(b) What is the meaning of ?Convection?? Write about the classification of
it.
04
(c) Write about the different modes of mass transfer. And write the
different applications involving it.
07
OR
Q.4 (a) Write about ?Thermal conductivity? with its unit. 03
(b) Discuss in brief about absorptivity, reflectivity and transmissivity. 04
(c) Derive the equations for mass and molar concentrations with ideal gas
mixture theory.
07
Q.5 (a) Write about the Tyndall effect exhibited by colloidal solution. 03
(b) Give any four differences between True solutions and Colloidal
solutions.
04
(c) Write a short note on Pigment. 07
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2
OR
Q.5 (a) Draw the diagram of a dialysis cell used for the purification of colloidal
solution.
03
(b) What do you mean by Gel? Give importance of it. 04
(c) Explain in detail about Refractive index of polymer. 07
*************
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This post was last modified on 20 February 2020