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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
B.Sc.DEGREE EXAMINATION -CHEMISTRY
SIXTH SEMESTER APRIL 2018
CH 6617- INDUSTRIAL CHEMISTRY
Date: 23-04-2018 Dept. No. Max. 100 Marks
Time: 09:00-12:00
PART- A
Answer ALL questions 10X2 20
1. Define calorific value of fuel.
2. State octane number.
3. What are plant growth harmones?
4. What is Bordeaux mixture? Mention its use.
5. What do you mean by reverse osmosis?
6. 'Temporary hardness can be removed by boiling but not permanent hardness.' Justify.
7. Differentiate BOD and COD.
8. What is green house effect?
9. What is plaster of paris? Mention its use.
10. What are abrasives?
PART- B
Answer any EIGHT questions 8x5 40 marks
11. What are coking and non-coking coals? Explain.
12. Write notes on Gobar electric cell.
13. What is Saccharin? How will you prepare it? Mention its use.
14. What are micronutrients? Discuss their role in plant growth.
15. Discuss the manufacture of D and 5-T.
16. How will you soften hard water by zeolite process
17. What happens when hard water is used in steam generation boilers? Explain.
18. List out the effects of iron and manganese in water.
19. Discuss the effects of ozone layer depletion.
20. Explain the purpose and procedure of Patent.
21. Write notes on explosives.
22. Differentiate lubricants and greases .
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PART- C
Answer any FOUR questions 4x10 40 marks
23. Give a brief account on cracking of petroleum.
24. Describe the manufacture of ethanol from molasses 6 marks
Write notes on bio-pesticides. 4 marks
25. Give a detailed account on the estimation of hardness of water by EDTA method.
26. Explain break point chlorination. 4 marks
Write notes on contact insecticides and fumigants 6 marks
27. Discuss the biochemical effects of the following pollutants
Mercury Cyanide (iii). CO SO2
28. What are petrochemicals? Mention their uses.
Write notes on setting of cement.