Anna University Chennai 2012-1st Sem B.E Computer Science and Engineering /B.Tech s,uary -Engineering Chemistry (CY2111)- exam paper

B.E/B.Tech Degree Examination, January 2012.
1st Semester
CY2111-Engineering Chemistry-I
(common to all branches other than Marine Engg)
(Regulations 2008)
Time: 3hrs Max marks: 100

ans all ques.
Part-A (10*2=20)
1) Distinguish ranging from kind of alkalinity and the ions responsible for the kinds.
2) What is calgon? How does it function in water treatment?
3) describe Polymerization.
4) How are FRPs produced?
5) elaborate the characteristics of absorption?
6) What do you understand by 'Purification of absorption'?
7) elaborate fissile and fertile nucleus?
8) elaborate the applications of Lithium batteries?
9) describe refractoriness of a refractory.
10)What are carbon nano tubes?

Part-B (5*16=80)
11. (a) (i) discuss EDTA method of determining hardness of water. (8)
(ii)50ml of std hard water containing one mg of pure caco3 per ml consumed 20 ml of EDTA. 50ml of water sample consumed 25ml of EDTA solution. 50ml of the sample after boiling filtering etc. consumed 18ml of EDTA. compute the temporary and permanent hardness of this water sample. (8)
(OR)
(b) (i) discuss the demineralization of water by ion exchange process. How are exhausted cation and anion ion exchange resins regenerated? (8)
(ii)What is reverse osmosis? discuss desalination of water by reverse osmosis method. elaborate the advantages of RO method? (8)

12. (a) (i) discuss the free radical mechanism involved in the formation of polyethylene. (8)
(ii)Classify polymers with suitable examples. (8)
(OR)
(b) (i) What do you understand by vulcanization of rubber? elaborate the advantages? provide a representative structural unit of rubber. (8)
(ii)Give the preparation and engineering uses of butyl rubber and SBR. (8)

13. (a) (i) Derive Langmuir adsorption isotherm and explain the use of the formula in the limiting conditions of very low and high pressures. (8)
(ii)Define adsorption isotherm and discuss 5 various kinds of isotherm. (8)
(OR)
(b) (i) What is the role of adsorbents in catalysis? (8)
(ii)What is the role of activated carbon in air and water pollution control?(8)

14. (a) (i) describe Nuclear fission. discuss its characteristics.(8)
(ii)What are the main parts of Light water nuclear reactor? What is a breeder reactor? (8)
(OR)
(b) (i)What are storage batteries? Giving cell reactions discuss the construction and working of lead acid battery. (8)
(ii)What are fuel cells? construct a H2O2 fuel cell and discuss its working. (8)

15. (a) (i)Explain the steps involved in the manufacture of alumina refractories. (8)
(ii)Write detailed note on emery and silicon carbide. (8)
(OR)
(b) (i) How is the viscosity index of a lubricant of determined? What is its significance? (8)
(ii)How do graphite and molybdenum sulphide function as lubricants? discuss. (8)

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Earning:   Approval pending.