Download OU B-Tech First Year 2011 June 3315 Engineering Chemistry Question Paper

Download OU (Osmania University) B.Tech (Bachelor of Technology) First Year (1st Year) 2011 June 3315 Engineering Chemistry Question Paper

Code No. 3315/N
FACULTY OF ENGINEERING & INFORMATICS
B.E. I Year (New) (Common, to all branches) (Main) Examination, June 2011
ENGINEERING CHEMISTRY
Time : 3 Hours ] [ Max. Marks : 75
Note : Answer 'all questions from Part ? A. Answer any five Questions from
Part B.
PART ?A - (Marks : 25)
What is Quinhydrone electrode Write the reduction electrode reaction of
it.
Write a short note on Ni-Cd battery.
Differentiate between Gibb's and . Helmholtz free energy.. 2
State phase rule and explain the terms involved.. 3
What are boiler troubles_? How are they prevented ? 3
Write a short note on differential aeration corrosion. 2
Distinguish between addition, and condensation polymerization. 3
Write the applications of Carbon rianotubes. 2:
What are the requirements of a good fuel ? 3
Define octane and cetane number of a fuel.
PART B (Marks : 50)
11. (a)? What ,is electrochemical series ? Give, its applications with suitable
examples. ?
5
(b) Describe the construction of lead-acid battery With the reactions
occurring during discharge. 5
12. (a) What is Carnot cycle ? Derive an expreSsion for the efficiency of
Carnot engine.
6
(b) The temperature of 1 mole of an ideal gas increases from 18 ?C to
55 ?C as the gas is compressed adiabatically. Calculate. the ,work
dohe and ?H for this process assuming that C, 4
13. (a) Differentiate between chemical and electrochemical corrosion. 4
(b) Discuss the various factors that influenCe the rate of corrosion'. 6
14. (a) What are plastics, fibres and elastomers.? Give one example to each. 4
(b) What is vulcanization of rubber ? What are its advantages over raw
rubber ?
(c) Give the applications of conducting polymers. 3
1.
2.
3.
4.
5.
8.
9.
10.
(This paper contains 2 pages) 1 P.T.O.
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Code No. 3315/N
FACULTY OF ENGINEERING & INFORMATICS
B.E. I Year (New) (Common, to all branches) (Main) Examination, June 2011
ENGINEERING CHEMISTRY
Time : 3 Hours ] [ Max. Marks : 75
Note : Answer 'all questions from Part ? A. Answer any five Questions from
Part B.
PART ?A - (Marks : 25)
What is Quinhydrone electrode Write the reduction electrode reaction of
it.
Write a short note on Ni-Cd battery.
Differentiate between Gibb's and . Helmholtz free energy.. 2
State phase rule and explain the terms involved.. 3
What are boiler troubles_? How are they prevented ? 3
Write a short note on differential aeration corrosion. 2
Distinguish between addition, and condensation polymerization. 3
Write the applications of Carbon rianotubes. 2:
What are the requirements of a good fuel ? 3
Define octane and cetane number of a fuel.
PART B (Marks : 50)
11. (a)? What ,is electrochemical series ? Give, its applications with suitable
examples. ?
5
(b) Describe the construction of lead-acid battery With the reactions
occurring during discharge. 5
12. (a) What is Carnot cycle ? Derive an expreSsion for the efficiency of
Carnot engine.
6
(b) The temperature of 1 mole of an ideal gas increases from 18 ?C to
55 ?C as the gas is compressed adiabatically. Calculate. the ,work
dohe and ?H for this process assuming that C, 4
13. (a) Differentiate between chemical and electrochemical corrosion. 4
(b) Discuss the various factors that influenCe the rate of corrosion'. 6
14. (a) What are plastics, fibres and elastomers.? Give one example to each. 4
(b) What is vulcanization of rubber ? What are its advantages over raw
rubber ?
(c) Give the applications of conducting polymers. 3
1.
2.
3.
4.
5.
8.
9.
10.
(This paper contains 2 pages) 1 P.T.O.
Cock No. 3315/N
15. (a) Differentiate between High and l_ow calorific value of a fuel. 2
(b) Explain proximate analysis of coal. What is its importance? 4
(o) Write a sh,o,rt note on LPG and CNG. 4
16. (a) Explain the principle and procedure involved in potentiometric acid-
base titrations. ' 4
(b) _ 2 mole of an ideal gas expands isothermally from .a
,
volume of
1-0 litres to 20 litres at 27 ?C. Calculate the entropy change in the
process. 3
tC) Distinguish between temporary and permanent hardness of water.. 3
LioaR
,

17. (a) Give the preparation, .properties and uses of the following 4
(i) ?PVC
'(ii) Perlon-U
' (b) What's the principle of Rocket propulsion '? 2
N
/
(o).
100 ml of a water sample required 20 ml of H
2
$0
4
fir
neutralization to phenolphthalein end point. After,this,
5
Mehyl orange
indicator was added to this and further acid required was 15 mi.
Calculate the type and amount Of alkalinity of watqr. . 4
?
-
2 5,800
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