Download OU B-Tech First Year 2014 June 6005 Engineering Chemistry Question Paper

Download OU (Osmania University) B.Tech (Bachelor of Technology) First Year (1st Year) 2014 June 6005 Engineering Chemistry Question Paper

Code No. 60051 M
FACULTY OF ENGINEERING & INFORMATICS
B.E. I Year (Main) Examination, June 2014
Subject : Engineering Chemistry
Time 3 Hours Max. Marks: 75
Note: Answer all questions of Part - A and answer any five questions from Part-B.
PART ? A (25 Marks)
1 Give success and limitations of I law and II law of thermodynamics.
(
3
)
2 Explain why entropy change is zero for reversible process and entropy change is
positive for irreversible process for the same state change.
(
3
)
3 Differentiate between primary and secondary battery.
(
3
)
4 Derive Nernst equation using equation relating AG and AG
?
.
(
3
)
5 Explain the formation of anodic areas on the surface of metallic materials through
differential aeration and contact with different metals with reactions.
(
3
)
6 Explain break point chlorination with the help of graph. (2)
7 Write the chemical equation for preparation of Bakelite. (2)
8 What is conducting polymer? Give two examples. (2)
9 Give the relationship between Higher calorific value (HCV) and Lower calorific value
(LCV). (2)
10 Explain Octane rating. (2)
PART ? B (50 Marks)
11 (a) Derive and compare isothermal reversible work expression with adiabatic
reversible work expression.
(
6
)
(b) A reversible carnot cycle does work equivalent to 150 K J per cycle if heat supplied
by cycle is 225 kJ at 227
?
C per cycle calculate
(i) the temperature at which heat is rejected (ii) thermal efficiency of engine (4)
12 (a) What are fuel cells? Explain' with an example and give their advantages.
(
5
)
(b) What are different types of electrodes ? Explain with their electrode reaction and
electrode potential equation.
(
5
)
13 (a) Discuss the factors affecting the rate of corrosion. (6)
(b) Describe electroplating of Nickel. (4)
14 (a) Give the differences between thermosets and thermoplastics.
(
5
)
(b) Give the structure of monomer of natural rubber and discuss the vulcanization of
rubber and properties of vulcanized rubber.
(
5
)
15 (a) Give requirements of a good fuel.
(
3
)
(b) Discuss the determination of calorific value of fuels by Bomb calorimeter with neat
diagram and corrections.
(
7
)
16 (a) Explain determination of temporary and permanent hardness of water of EDTA
method.
(
5
)
(b) Derive Calusius-Clapeyron equation for liquid vapour equilibrium and discuss its
applications.
(
5
)
17 (a) Discuss principle and method of potentiomentric acid-base titrations. (6)
(b) Give construction, and working of dry cell. (4)
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