Download JNTUA B.Tech 1-1 R13 2017 Dec Supply 13A51101 Engineering Chemistry Question Paper

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Code: 13A51101


B.Tech I Year (R13) Supplementary Examinations December 2017
ENGINEERING CHEMISTRY
(Common to all branches)

Time: 3 hours Max. Marks: 70

PART ? A
(Compulsory Question)

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1 Answer the following: (10 X 02 = 20 Marks)
(a) Define corrosion. What are the factors affecting the corrosion?
(b) What are fuel cells? Give two examples.
(c) Distinguish thermosetting and thermoplastics.
(d) Give any two important applications of conducting polymers.
(e) Write any four good characteristics of a fuel.
(f) Write any two merits and demerits of power alcohol
(g) Write any four important properties of refractory materials.
(h) Define super conductivity. Give examples for super conducting materials.
(i) Write notes on carbonate conditioning of water.
(j) Define scale and sludge.

PART ? B
(Answer all five units, 5 X 10 = 50 Marks)

UNIT ? I

2 Define rechargeable batteries. Describe Lead-acid batteries with neat sketch.
OR
3 Give brief note on electroplating, electro less plating and sacrificial anodic protection.

UNIT ? II

4 Define and explain condensation polymerization method by taking suitable example.
OR
5 Give brief note on Bakelite and Silicones.

UNIT ? III

6 What is metallurgical coke? Explain manufacturing of metallurgical coke by Otto Hoffmann?s by product
process.
OR
7 What is flue gas? Explain analysis of flue gas by Orsat?s apparatus.

UNIT ? IV

8 Explain the process of setting and hardening of cement.
OR
9 Write the importance of lubricants and explain any four important properties.

UNIT ? V

10 Explain estimation of hardness by EDTA method in detail.
OR
11 Give brief note on Reverse Osmosis and Electro dialysis.

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R13
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