JNTU Kakinada B-Tech 1-1 R161105 ENGINEERING CHEMISTRY R16 May 2018 Question Paper

JNTU Kakinada (JNTUK) B-Tech First Year First Semester (1-1) ENGINEERING CHEMISTRY Common to to CE, ME, Aero E, Bio-Tech, Chem E, Min E, Metal E, PE, PChem E, Auto E R16 Regulation May 2018 Question Paper

Code No: R161105
I B. Tech I Semester Supplementary Examinations, May – 2018
ENGINEERING CHEMISTRY (Com. to CE, ME, Aero E, Bio-Tech, Chem E, Min E, Metal E, PE, PChem E, Auto E)
Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answer ALL the questions in Part-A
3. Answer any FOUR Questions from Part-B
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PART ?A
1. a) What is meant by compounding? (2M)
b) What is the difference of synthetic petrol and cracked petrol? (2M)
c) Write the drawbacks of dry cell. (2M)
d) Write the importance of TEM in characterization of nanoparticles. (2M)
e) Explain the cause of caustic embrittlement in water. (2M)
f) What are the constituents of cement? (2M)
g) How is biodiesel prepared? (2M)
PART -B
2. a) Define addition polymerization. Explain free radical mechanism of addition
polymerization. (8M)
b) Discuss any two techniques for fabrication of plastics.
(6M)
3. a) Explain Bergius process for preparation of synthetic petrol. (6M)
b) Explain Orsat process for flue gas analysis.
(8M)
4. a) What are standard electrodes? Explain the working of standard electrode by taking
an example. (8M)
b) Differentiate anodic and cathodic coatings.
(6M)
5. a) Explain sol-gel method in preparation of nanomaterials. (8M)
b) Discuss the applications of superconductors.
(6M)
6. a) Explain break point chlorination. (6M)
b) Explain electrodialysis method for purification of brackish water.
(8M)
7. a) Discuss any two mechanisms of lubricant. (8M)
b) What are insulators? Explain thermal insulators. (6M)

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SET – 1
R16