GTU BE 1st and 2nd Semester 110001 Chemistry Summer 2018 Question Paper

Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER? 1
st
/ 2
nd
? EXAMINATION ? SUMMER 2018
Subject Code: 110001 Date: 18-05-2018
Subject Name: Chemistry
Time: 02:30 pm to 05:00 pm Total Marks: 70
Instructions:
1. Attempt any five questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) What is Hardness of Water? State its types and explain hot lime soda process for
water treatment in detail.
07
(b) Describe with the help of a neat sketch of rotary kiln for manufacture of Portland
Cement by wet process.
07

Q.2 (a) Define the word ?Corrosion?. Explain the mechanism of Electrochemical
Corrosion.
07
(b) Explain in detail about different spinning processes. 07

Q.3 (a) Define the word Fuel. Give its classification and distinguish between Proximate
and Ultimate analysis of a coal.
07
(b) What are alloys? Give the characteristics and classification of alloys. 07

Q.4 (a) Explain the manufacturing process of Ethyl alcohol by Fermentation process. 07
(b) Give classification of refractory and write the properties of a refractory. 07

Q.5 (a) What is Chromatography? State its types and Explain in detail about paper
chromatography.
07
(b) Differentiate between Renewable and Non-renewable sources of energy and
discuss about the importance of Solar Energy.
07

Q.6 (a) Write in detail about Ozone layer depletion and acid rain. 07
(b) What do you mean by metallic coating? Explain different methods of cleaning of
base metal before electroplating.
07

Q.7 (a) What do you mean by Lubricant? State its types and write the properties of a
good lubricant.
07
(b) Distinguish between: (i)Addition Polymerization and Condensation Polymerization (ii) Thermoplastic and Thermosetting Plastic
07