Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 1st And 2nd Sem (New And SPFU) 3110001 Chemistry Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?I &II (NEW) EXAMINATION ? SUMMER-2019
Subject Code: 3110001 Date: 03/06/2019
Subject Name: Chemistry
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.
Marks
Q.1 (a) Define electron affinity and discuss its variation in periodic
table.
03
(b) What do you understand by hardness of water? Differentiate
between temporary and permanent hardness.
04
(c) What is polymerization? Give a detailed classification of
polymers with suitable examples.
07
Q.2 (a) What is vulcanization of Rubber? Why vulcanization is done? 03
(b) Write characteristics of a good fuel. 04
(c) With a neat and well labeled diagram, explain fractional
distillation of petroleum.
07
OR
(c) Give classification of fuel. Discuss proximate analysis of fuel. 07
Q.3 (a) Write monomers, properties and uses of following polymers: (i)
Bakelite (ii) Nylon 66
03
(b) Answer the following:
(i) H2O is liquid at room temperature while H2S is gas.
Why?
(ii) What is coordinate bond? Give example of a coordinate
compound.
04
(c) Discuss ?Zeolite processes of softening of water with neat
diagram.
07
OR
Q.3 (a) Define pH. Calculate pH of .02 N H2SO4. 03
(b) Differentiate between:
(i) Stretching and bending vibration
(j) Thermosetting and thermoplastic polymer
04
(c) Write a note on disadvantages of using hard water in boiler. 07
Q.4 (a) What are alloys? Give example and explain why alloying is
done?
03
(b) Write a short note on ?top down? and ?bottom up approach? to
synthesize Nanomaterials.
04
(c) What is ?Fermentation?? Explain manufacturing of ethanol by
fermentation process.
07
OR
Q.4 (a) Write a brief note on physical properties of metals. 03
(b) What are Nanomaterials? Write a note on application of
Nanomaterials.
04
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?I &II (NEW) EXAMINATION ? SUMMER-2019
Subject Code: 3110001 Date: 03/06/2019
Subject Name: Chemistry
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.
Marks
Q.1 (a) Define electron affinity and discuss its variation in periodic
table.
03
(b) What do you understand by hardness of water? Differentiate
between temporary and permanent hardness.
04
(c) What is polymerization? Give a detailed classification of
polymers with suitable examples.
07
Q.2 (a) What is vulcanization of Rubber? Why vulcanization is done? 03
(b) Write characteristics of a good fuel. 04
(c) With a neat and well labeled diagram, explain fractional
distillation of petroleum.
07
OR
(c) Give classification of fuel. Discuss proximate analysis of fuel. 07
Q.3 (a) Write monomers, properties and uses of following polymers: (i)
Bakelite (ii) Nylon 66
03
(b) Answer the following:
(i) H2O is liquid at room temperature while H2S is gas.
Why?
(ii) What is coordinate bond? Give example of a coordinate
compound.
04
(c) Discuss ?Zeolite processes of softening of water with neat
diagram.
07
OR
Q.3 (a) Define pH. Calculate pH of .02 N H2SO4. 03
(b) Differentiate between:
(i) Stretching and bending vibration
(j) Thermosetting and thermoplastic polymer
04
(c) Write a note on disadvantages of using hard water in boiler. 07
Q.4 (a) What are alloys? Give example and explain why alloying is
done?
03
(b) Write a short note on ?top down? and ?bottom up approach? to
synthesize Nanomaterials.
04
(c) What is ?Fermentation?? Explain manufacturing of ethanol by
fermentation process.
07
OR
Q.4 (a) Write a brief note on physical properties of metals. 03
(b) What are Nanomaterials? Write a note on application of
Nanomaterials.
04
2
(c) Discuss application of biotechnology in agriculture and
medicinal field.
07
Q.5 (a) What are fullerenes? Explain properties of fullerenes in short. 03
(b) Write principle of UV-VIS spectroscopy. 04
(c) What is corrosion? Explain wet corrosion or electrochemical
corrosion of iron.
07
OR
Q.5 (a) Give Reason:
(i) First ionization energy (IE1) of Nitrogen (atomic Number
= 7) is higher than Oxygen (atomic Number = 8).
(ii) Noble gases (Group 18) have zero valency.
03
(b) Answer the following:
(i) What are polar and non-polar covalent bonds?
(ii) Write electronic configuration of Cr(Atomic Number 24)
04
(c) Write a brief note on protective coating. 07
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This post was last modified on 20 February 2020