Download VTU ((Visvesvaraya Technological University) B.E/B-Tech 2019 July ( Bachelor of Engineering) First & Second Semester (1st Semester & 2nd Semester) 18 Scheme 18CHE12 Engineering Chemistry Question Paper
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First Semester B.E. Degree Examination, Dec.2018/Jan.2019
Engineering Chemistry
Time: 3 hrs. Max. Marks: 100
Note: Answer any FIVE full questions, choosing ONE full question from each module.
Module - 1
1
c.
2 a.
b.
c.
a. Define terms : (i) Free energy (ii) Entropy (iii) Cell potential. (06 Marks)
b. For the cell, Fe I Fe
2
+ (0.01M) Ag (0.1M) Ag, write the cell reaction and calculate the
e.m.f of cell at 298 K, if standard potentials of Fe and Ag electrodes are ? 0.44 V and +0.8V
respectively. (07 Marks)
What are Secondary Batteries? Explain the construction and working of Nickel ? metal
hydride (Ni - MR) battery. Mention its applications. (07 Marks)
OR .
Define Primary, Secondary and Reserve batteries with examples. (06 Marks)
What are concentration cells'? The cell potential of copper concentration cell
Cu CuSO
4
(0.005M) II CuSO4 (X) Cu is 0.0295 V at 25?C. Calculate the value of X.
(06 Marks)
electrode giving its application in
(08 Marks)
Explain the construction and working of glass
determination of pH of solution.
Module- 2
3 a. Define corrosion. Describe the electrochemical theory of corrosion taking rusting of iron as
an example. (07 Marks)
b. Explain (i) Water line corrosion (ii) Pitting corrosion. (06 Marks)
c. What is electroless plating? Explain electroless plating of Nickel. (07 Marks)
OR
4 a. What is meant by metal ^finishing? Mention (any five) technological importance of metal
fmishing. (06 Marks)
b. Explain the process of (i) Galvanizing (ii) Anodising of AC. (07 Marks)
e. What is electroplating? Explain electroplating of chromium. Mention why chromium cannot
be used as anode. (07 Marks)
Module -3
5 a. Define ealprific value of fuel. Explain the experimental determination of calorific value of
solid / liquid fuel using Bomb calorimeter. (08 Marks)
b. What are fuel cells? Describe the construction and working of Solid Oxide Fuel Cell
(SOFC). (06 Marks)
c. What are Solar cells? Explain the construction and working of photovoltaic (PV) cell.
(06 Marks)
1 oft
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USN
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0
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First Semester B.E. Degree Examination, Dec.2018/Jan.2019
Engineering Chemistry
Time: 3 hrs. Max. Marks: 100
Note: Answer any FIVE full questions, choosing ONE full question from each module.
Module - 1
1
c.
2 a.
b.
c.
a. Define terms : (i) Free energy (ii) Entropy (iii) Cell potential. (06 Marks)
b. For the cell, Fe I Fe
2
+ (0.01M) Ag (0.1M) Ag, write the cell reaction and calculate the
e.m.f of cell at 298 K, if standard potentials of Fe and Ag electrodes are ? 0.44 V and +0.8V
respectively. (07 Marks)
What are Secondary Batteries? Explain the construction and working of Nickel ? metal
hydride (Ni - MR) battery. Mention its applications. (07 Marks)
OR .
Define Primary, Secondary and Reserve batteries with examples. (06 Marks)
What are concentration cells'? The cell potential of copper concentration cell
Cu CuSO
4
(0.005M) II CuSO4 (X) Cu is 0.0295 V at 25?C. Calculate the value of X.
(06 Marks)
electrode giving its application in
(08 Marks)
Explain the construction and working of glass
determination of pH of solution.
Module- 2
3 a. Define corrosion. Describe the electrochemical theory of corrosion taking rusting of iron as
an example. (07 Marks)
b. Explain (i) Water line corrosion (ii) Pitting corrosion. (06 Marks)
c. What is electroless plating? Explain electroless plating of Nickel. (07 Marks)
OR
4 a. What is meant by metal ^finishing? Mention (any five) technological importance of metal
fmishing. (06 Marks)
b. Explain the process of (i) Galvanizing (ii) Anodising of AC. (07 Marks)
e. What is electroplating? Explain electroplating of chromium. Mention why chromium cannot
be used as anode. (07 Marks)
Module -3
5 a. Define ealprific value of fuel. Explain the experimental determination of calorific value of
solid / liquid fuel using Bomb calorimeter. (08 Marks)
b. What are fuel cells? Describe the construction and working of Solid Oxide Fuel Cell
(SOFC). (06 Marks)
c. What are Solar cells? Explain the construction and working of photovoltaic (PV) cell.
(06 Marks)
1 oft
18CHE12
OR
6 a. Explain the preparation of solar grade Silicon by Union Carbide process. (07 Marks)
b. Write a note on (i) Power alcohol (ii) Unleaded petrol. (06 Marks)
c. 0.75 g of coal sample (Carbon 90%, H2 5% and ash 5%) was subjected to combustion in
Bomb calorimeter. Mass of water taken in calorimeter was 2.5 kg and the water equivalent
of calorimeter is 0.65 kg. The rise in temperature was found to be 3.2?C. Calculate higher
and lower calorific values of the sample. Latent heat of steam = 2457 kJ/kg and specific heat
of water = 4.187 kJ/kg/?C. (07 Marks)
Module-4
7 a. What are the causes, effects and disposal methods of e-waste? (07 Marks)
b. What are the sources, effects and control of lead pollution? (Pb pollution). (07 Marks)
c. In a COD test, 30.2 cm
3
and 14.5 cm
3
of 0.05 N FAS solutions are required for a Blank and
Sample titration respectively. The volume test sample used was 25 cm
3
. Calculate the COD
of the sample solution. (06 Marks)
OR
8 a. Explain the sources, effects and control of oxides of nitrogen. (07 Marks)
b. Explain softening of water by ion exchange method. (07 Marks)
c. Explain the Activated sludge treatment of sewage water. (06 M arks)
Module-5
a. Explain the theory, instrumentation and application of Atomic absorption spectroscopy.
(07 Marks)
b. Explain the theory and instrumentation of potentiometry. (07 Marks)
c. Write a note on Fullerene. Mention its application. (06 Marks)
OR
10 a. What are Nanomaterials? Explain the synthesis of nanomaterials by precipitation method.
(07 Marks)
b. Explain the synthesis of Nano materials by Sol-Gel technique. (06 Marks)
c. Explain the theory and instrumentation of concluctometry. (07 Marks)
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This post was last modified on 01 January 2020