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Code: 13A51101
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B.Tech I Year (R13) Supplementary Examinations December 2019
ENGINEERING CHEMISTRY
(Common to all branches)
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)
- Describe briefly about the theories of corrosion.
- What are the factors, which affect corrosion?
- What do you mean by co-ordination polymerization? What are the roles of Ziegler-Natta catalysts?
- Describe the conducting polymers in detail.
- What are fuel cells used for?
- What is Fischer Tropsch synthesis?
- What is meant by flash point?
- What are the various functions of lubricants?
- What is boiler corrosion and why it is caused?
- What is meant by demineralization of water and what types of substances are used for this purpose?
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PART - B
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(Answer all five units, 5 X 10 = 50 Marks)
UNIT - I
2 (a) Discuss the mechanism of electrochemical corrosion.
(b) What are the factors on which corrosion depends?
OR
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3 (a) Explain the analysis of Glucose and urea.
(b) Write a note on nickel-cadmium battery.
UNIT - II
4 (a) Explain the addition and condensation polymerization with suitable examples.
(b) Explain the properties and applications of PVC and Nylons.
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OR
5 (a) What are thermoplastics and thermosetting resins?
(b) What are elastomers? Give the preparation, properties and applications of polysulphide rubbers.
UNIT - III
6 (a) Discuss about the Bergius processes with examples.
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(b) What is petroleum? Give an account of petroleum refining.
OR
7 (a) Explain briefly advantages and disadvantages of power alcohol.
(b) Explain the fuel gas analysis by Orsat's apparatus.
Contd. in page 2
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FirstRanker's choice
Code: 13A51101
UNIT - IV
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8 What are refractories? Explain porosity and strength of refractories.
OR
9 (a) A sample of vegetable oil was tested for acid value. 10 gm of oil was titrated against N/40 KOH and burette reading was found to be 2.6ml. State whether the oil is a proper lubricant.
(b) Discuss briefly about hydration and hydrolysis.
UNIT - V
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10 (a) A pond water sample contains 200 mg of Ca (HCO3)2 per liter. Calculate the hardness of water in terms of CaCO3 equivalent.
(b) Explain about the ion-exchange process.
OR
11 (a) Write about the reverse Osmosis.
(b) Discuss about the estimation of hardness by EDTA method.
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This download link is referred from the post: JNTU Anantapur B-Tech 1-1 last 10 year question papers 2010 -2020 -All regulation- All branches- 1st Year 1st Sem
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