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

Download JNTUA (JNTU Anantapur) B.Tech R15 (Bachelor of Technology) 1st Year 2nd Semester (1-2) 2019 June 15A51101 Engineering Chemistry Previous Question Paper || Download B-Tech 1st Year 2nd Sem 15A51101 Engineering Chemistry Question Paper || JNTU Anantapur B.Tech R15 1-2 Previous Question Paper || JNTU Anantapur B.Tech ME 1-2 Previous Question Paper || JNTU Anantapur B.Tech CSE 1-2 Previous Question Paper || JNTU Anantapur B.Tech Mech 1-2 Previous Question Paper || JNTU Anantapur B.Tech EEE 1-2 Previous Question Paper || JNTU Anantapur B.Tech ECE 1-2 Previous Question Paper

This post was last modified on 11 September 2020

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ENGINEERING CHEMISTRY
(Common to CE, EEE & CSE)

Time: 3 hours Max. Marks: 70

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PART ? A
(Compulsory Question)

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1 Answer the following: (10 X 02 = 20 Marks)

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(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.

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(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.

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

UNIT ? I

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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.

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UNIT ? II

4 Discuss the mechanism of free radical polymerization.
OR

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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.

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OR
7 What are the factors which influence the rate of corrosion?

UNIT ? IV

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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

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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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