Engineering Chemistry II CY6251 MJ2014 2nd Semester Question Paper

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Anna University Question Paper Code : 57014
B.E./B.Tech. DEGREE EXAMINATION, MAY/JUNE 2014. 

Second Semester

Civil Engineering 

CY 6251 — ENGINEERING CHEMISTRY – II
(Common to. all branches Except Marine Engineering, Bio Technology and Pharmaceutical Technology)

(Regulation 2013) 

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PART A — (10 x 2 = 20 marks) 

1. Write the chemical reaction involved in calgon conditioning.
2. Mention any two. compounds that cause caustic embrittlement in boilers.
3. Define standard electrode potential.
4. What is dry corrosion? Give one example.
5. What are the drawbacks.of nuclear energy?
6. Will the emf of battery vary with size? Give reason for your answer.
7. What do you understand by dimensional stability of a refractory material?
8. What are the components of a water proof cement?
9. What is power alcohol? Mention the advantage.
10. Define explosive range of a fuel.\



PART B (5 x 16 = 80 marks) 

11. (a) (i) Explain the boiler troubles, 'scales' and 'caustic embrittlement ' in detail.
(ii) How is water .softened by Ion exchange method? Explain in -detail with a neat diagram.
Or
(b) (i) What are zeolites? How do they function in removing the hardness of water? (8)
(ii) . What is meant by, internal conditioning of water? Explain :
(1) Phosphate and
(2) Carbonate conditioning with relevant equations., . (8)