Download VTU BE 2020 Jan Question Paper 18 Scheme CHE1222 Engineering Chemistry First And Second Semester

Download Visvesvaraya Technological University (VTU) BE/B.Tech First And Second Semester (1st sem and 2nd sem) 2019-2020 Jan ( Bachelor of Engineering) 18 Scheme CHE1222 Engineering Chemistry Previous Question Paper

%:
7RARY
,
First/Second Semester B.E. Degree Examination,
Doge iS12
Engineering Chemistry
USN
CHE12/22
Time: 3 hrs. Max. Marks: 100
?
c;
E 1 a. Define Free Energy. Derive Nernst equation for single electrode potential.
c ',.
(07 Marks)
-a
b. What are Reference Electrodes? Describe the construction and working of Calomel
9)
.
cd electrode. (06 Marks)
v.]
1.)
c. Explain the construction and working of Ni ? Metal Hydride battery. Give the reaction
t.-.1)
, ,.,
during charging and discharging mode. Give any two applications_
0.=
(07 Marks)
, .?.. ,
. ,
X
76 ' OR
II
ti)
c ao
2 a. Describe the construction and working of Lithium ? ion battery. Give its applications.
4-

(07 Marks)
F,th
,.. .
b. Write a note on Primary , Secondary and Reserve batteries. (06 Marks)
ad c
.i.-. _
c. What are Concentration Cells? EMF of the cell Ag/AgNO3(C1) // AgNO3 (C
2
= 0.2m) / Ag is
O 0.8V Calculate C1 of the cell. (07 Marks)
c
0.,
Module-2
g 1
t .
3 a. What is Corrosion? Explain the Electrochemical theory of corrosion by taking iron as an
.. 8
example. (07 Marks)
o -I=
ti) c
ct
b. Explain i) Differential Metal Corrosion ii) Pitting Corrosion. (07 Marks)
-0
?
:5
c. What do you mean by metal finishing? Mention any five technological importances.
-8 73
(06 Marks)
m
7
. ...,
:.-- --, ct
? r-
-
: o
0 -4?
OR
EL ,: 4 a. Define and explain any two terms : P
.; cz
i) Polarisation ii) Decomposition potential
,
iii) Over voltage.
?,...,
(06 Marks)
E .2
b. What is Electroless Plating? Explain the Electroless plating of copper. (07 Marks)
"' ,
t

un tc
c. Explain the process of Galvanization.
c ..=
(07 Marks)
..:
L.., ,,,
7
5
Module-3
0
? CA 5 a What is Knocking? Explain the mechanism. (07 Marks)
t ?

-
fa. ' 8
b . On burning 0.96 grams of solid fuel in bomb calorimeter the temperature of 3500 grams of
P
O t
,
..
water increased by 2.7
?
C water equivalent of calorimeter and latent heat of steam are
;:,
G
?
E
385 grams and 587 cal/gram respectively. if the fuel contains 5% H2 , calculate its gross and
?,
?
,-.i net calorific value. Specific heat of water = 4.187 kJ/kg K. (06 Marks)
c. What are Fuel Cells? Describe the construction and working of CH3OH ? 02 fuel cell.
? ?
z
(07 Marks)
O
cz
t
OR
G
E E 6 a. What are Solar Cells? Explain the construction and working of a typical P.V. Cell. (07 Marks)
b. Explain the production of solar grade Si by Union Carbide Process. (07 Marks)
c. Write a note on : i) Power alcohol ii) Unleaded petrol. (06 Marks)
Note: Answer any FIVE full questions, choosing ONE full question from each module.
Module-1
FirstRanker.com - FirstRanker's Choice
%:
7RARY
,
First/Second Semester B.E. Degree Examination,
Doge iS12
Engineering Chemistry
USN
CHE12/22
Time: 3 hrs. Max. Marks: 100
?
c;
E 1 a. Define Free Energy. Derive Nernst equation for single electrode potential.
c ',.
(07 Marks)
-a
b. What are Reference Electrodes? Describe the construction and working of Calomel
9)
.
cd electrode. (06 Marks)
v.]
1.)
c. Explain the construction and working of Ni ? Metal Hydride battery. Give the reaction
t.-.1)
, ,.,
during charging and discharging mode. Give any two applications_
0.=
(07 Marks)
, .?.. ,
. ,
X
76 ' OR
II
ti)
c ao
2 a. Describe the construction and working of Lithium ? ion battery. Give its applications.
4-

(07 Marks)
F,th
,.. .
b. Write a note on Primary , Secondary and Reserve batteries. (06 Marks)
ad c
.i.-. _
c. What are Concentration Cells? EMF of the cell Ag/AgNO3(C1) // AgNO3 (C
2
= 0.2m) / Ag is
O 0.8V Calculate C1 of the cell. (07 Marks)
c
0.,
Module-2
g 1
t .
3 a. What is Corrosion? Explain the Electrochemical theory of corrosion by taking iron as an
.. 8
example. (07 Marks)
o -I=
ti) c
ct
b. Explain i) Differential Metal Corrosion ii) Pitting Corrosion. (07 Marks)
-0
?
:5
c. What do you mean by metal finishing? Mention any five technological importances.
-8 73
(06 Marks)
m
7
. ...,
:.-- --, ct
? r-
-
: o
0 -4?
OR
EL ,: 4 a. Define and explain any two terms : P
.; cz
i) Polarisation ii) Decomposition potential
,
iii) Over voltage.
?,...,
(06 Marks)
E .2
b. What is Electroless Plating? Explain the Electroless plating of copper. (07 Marks)
"' ,
t

un tc
c. Explain the process of Galvanization.
c ..=
(07 Marks)
..:
L.., ,,,
7
5
Module-3
0
? CA 5 a What is Knocking? Explain the mechanism. (07 Marks)
t ?

-
fa. ' 8
b . On burning 0.96 grams of solid fuel in bomb calorimeter the temperature of 3500 grams of
P
O t
,
..
water increased by 2.7
?
C water equivalent of calorimeter and latent heat of steam are
;:,
G
?
E
385 grams and 587 cal/gram respectively. if the fuel contains 5% H2 , calculate its gross and
?,
?
,-.i net calorific value. Specific heat of water = 4.187 kJ/kg K. (06 Marks)
c. What are Fuel Cells? Describe the construction and working of CH3OH ? 02 fuel cell.
? ?
z
(07 Marks)
O
cz
t
OR
G
E E 6 a. What are Solar Cells? Explain the construction and working of a typical P.V. Cell. (07 Marks)
b. Explain the production of solar grade Si by Union Carbide Process. (07 Marks)
c. Write a note on : i) Power alcohol ii) Unleaded petrol. (06 Marks)
Note: Answer any FIVE full questions, choosing ONE full question from each module.
Module-1
18CHE12/22
Module-4
7 a. What are the main sources, effects and control of lead pollution?
b. Mention the various causes, effects and disposal methods of e ? waste.
(07 Marks)
(07 Marks)
c. 50 mC of an industrial sewage has consumed 11.5 mf of 0.4N K
2
Cr
2
0
7
solution for complete
oxidation. Calculate C.O.D of industrial sewage. (06 Marks)
OR
8 a. Explain the activated sludge treatment of sewage water_ (07 Marks)
b. What is Desalination? Describe the desalination of seawater by reverse Osmosis process.
(07 Marks)
c. Write a note on Ozone depletion. (06 Marks)
Module-5
9 a. Explain the theory, Instrumentation and Application of Calorimetry. (06 Marks)
b. What is Potentiometric titration? Explain the principle involved in Potentiometric titration.
(07 Marks
)

c_ Write a note on Fullerene. Mention its application. (07 Marks)
OR
10 a_ What are Nano ? materials? Give their synthesis by Sol ? gel techniques.
b. Write a note on Graphenes. Mention their applications.
c_ Explain the theory and applications of Atomic Absorption Spectrosco
(07 Marks)
(07 Marks)
(06 Marks)
* * .1; -le
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