Download JNTUA B.Tech 1-2 R15 2019 June 15A51101 Engineering Chemistry Question Paper

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Code: 15A51101


B.Tech I Year II Semester (R15) Regular & Supplementary Examinations May/June 2019
ENGINEERING CHEMISTRY
(Common to CE, EEE & CSE)

Time: 3 hours Max. Marks: 70

PART ? A
(Compulsory Question)

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1 Answer the following: (10 X 02 = 20 Marks)
(a) What is priming and foaming?
(b) What is Calgon? What is its use in water technology?
(c) Recall the term functionality of a monomer.
(d) List out any two important applications of Polyvinyl chloride.
(e) Define reversible and irreversible cell with example.
(f) Mention any two advantages of electroless platting.
(g) State Cetane number.
(h) Write the composition of water gas.
(i) Give any two requisites of a good refractory.
(j) Give short note on oiliness of a lubricant.

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

UNIT ? I

2 Explain the types of alkalinity and also determine the alkalinity of given water sample.
OR
3 (a) Write elaborately about demineralization of hard water with a neat diagram.
(b) Explain zeolite process of hard water softening with diagram.

UNIT ? II

4 Discuss the mechanism of free radical polymerization.
OR
5 Explain preparation, properties and uses of Buna - S and polysulfide.

UNIT ? III

6 Explain the cathodic and anodic reactions if NICAD batteries with applications.
OR
7 What are the factors which influence the rate of corrosion?

UNIT ? IV

8 Describe the Otto-Hoffmann?s method of coke manufacture and recover various by product.
OR
9 Explain the fixed bed catalytic cracking for manufacture of gasoline with neat sketch.

UNIT ? V

10 Explain the manufacture and properties of Portland cement.
OR
11 How many types of lubrication process? Explain in detail with diagram.

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R15
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