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DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY,LONERE 402103
Supplementary Examination – Summer 2019
Course: B. Tech
Sem: I/II
Subject: Engineering Chemistry
Marks: 60
Subject Code:CHM103/203
Duration: 3 Hr.
Date:4/6/2019
Instructions to the Students:
1
. Each question carries 12 marks.
2
3
4
. Attempt any FIVE questions of the following.
. Illustrate your answers with any neat sketches, diagram etc. Whenever necessary.
. If some parts or parameter is noticed to be missing, you may appropriately assume it and should mention
clearly
(
Level / Marks
CO)
Q.1 Solve Any Two of the following.
A) Explain in detail Ion Exchange process with its advantages and
disadvantages.
B) How does the hardness of water determined by EDTA by
complexometric Method?
01
01
06
0
0
6
6
C) Write a note on Chemical Oxygen Demand (COD).
01
02
Q.2
Q.3
A) State Phase Rule equation and Explain the term Component of Phase
Rule with examples.
06
B) Explain in detail Phase Diagram of Sulphur system.
02
0
6
A) Explain the Froath Floatation and Magnetic separation method of
physical concentration of metals.
B) Explain the electrolytic refining of Cu metal.
03
03
06
0
6
Q.4 Solve Any Two of the following.
A) Explain Thick film and Thin film Lubrication with suitable examples.
B) Explain the Proximate analysis of coal with its significance.
C) Give the classification of fuels and explain characteristics of good
fuel.
04
04
04
06
0
0
6
6
Q.5
A) How does ethyl alcohol manufacture from molasses by Fermentation
process?
B) Explain synthesis, physical-chemical properties and uses of Naphthalene.
05
05
06
0
6
Q.6 Solve Any Two of the following.
A) Define the terms Ohm’s law, Specific Conductance, Equivalent
conductance, Molecular conductance and cell constant with their units.
B) Explain Debye- Huckel theory of strong electrolyte.
06
06
06
06
0
0
6
6
C) Explain the principal of Conductometric titration with example of a)
Strong acid and Strong base b) Weak acid and Strong base.
End
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