LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

LM 20

SIXTH SEMESTER – APRIL 2006

                                                     CH 6605 – INDUSTRIAL CHEMISTRY

(Also equivalent to CHE 605)

 

 

Date & Time : 26-04-2006/9.00-12.00         Dept. No.                                                       Max. : 100 Marks

Part A

Answer the following                                                                             10×2 = 20

1. What are renewable and nonrenewable energy resources?
2. How is producer gas manufactured?
3. How are chemical fuels classified?
4. What are herbicides? Cite two examples.
5. Give approximate chemical composition of any one mixed fertilizer.
6. What are the ions responsible for making water hard?
7. How are suspended impurities in water removed?
8. What is acid rain? What are its consequences?
9. Explain origin of poisoning of ground water by cyanide ions.
10. Give any two differences between paints and dyes.

 

Part B

Answer any eight of the following:                                                       8×5 = 40

 

11. Define calorific value of a fuel. State advantages and disadvantages (two each) of gaseous fuels over solid fuels.
12. What is coal? Explain its preparation, properties and uses.
13. Write short notes on primary and secondary fuels.
14. Explain the role of micronutrients in agriculture.
15. What is triple superphosphate? How is it prepared?
16. Give the preparation and two uses of lime – sulphur.
17. Explain differences between temporary hardness and permanent hardness of water
18. Describe reverse osmosis, with special reference to desalination of sea water.
19. Explain (ii) green house effect and (ii) ozone layer depletion
20. What are the ways of reducing carbonmonoxide pollution in atmospheric air?
21. What are plastics? What are their advantages? How do they affect environment?
22. Write notes on food industry.

Part C

 

Answer any four of the following:                                                        4×10 = 40

 

23. Explain the significance of the following constituents of coal (i) moisture (ii) volatile matter (iii) carbon (iv) ash.
24. Explain of petroleum. Discuss advantages of catalytic cracking over thermal cracking.
25. Write notes on (i) phosphatic fertilizers (ii) annealing of glass
26. Discuss the use of complexometric titrations in estimating hardness of water.
27. How is river water converted into potable water?
28. Discuss methods to treat industrial waste water and gases.

 

 

Go To Main Page

 

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

LM 22

SIXTH SEMESTER – APRIL 2007

CH 6605 – INDUSTRIAL CHEMISTRY

 

 

Date & Time: 23/04/2007 / 9:00 – 12:00 Dept. No.                                                Max. : 100 Marks

 

 

PART- A                                            (10×2=20)

Answer ALL the questions.

1. Write the role of phosphorous and potassium in the healthy growth of plants.
2. Give the structure and uses methoxychlor.
3. Differentiate between scale and sludge.
4. How will you prepare saccharin?
5. What is break point chlorination?

6. Define octane number.
7. How is coal classified on basis of its rank?
8. What are the advantages of gaseous fuels over other forms of fuel?
9. What are primary and secondary air pollutants? Give examples.
10. What are the causes of radioactive pollution?

 

 

PART- B                                                        (8×5=40)

Answer any EIGHT questions

11. a) Explain the disadvantages of hard water in industries.
12. b) Discuss any two methods for the prevention of scale formation.
13. Write a note on ion exchange resins with examples. How are ion exchange resins regenerated in

demineralisation process?

13. Describe continuous hot lime soda process of water softening.
14. Explain the manufacture of the following.
15. a) Ammonium sulphate b) Urea
16. Briefly describe the role of micronutrients and their functions in plants.
17. How will you prepare aldrin? Give its important uses.
18. Explain the manufacture of paper with the help of a flow chart.
19. What is cracking? Write the advantages of catalytic cracking over thermal cracking?
20. Describe a method to determine chemical oxygen demand of waste water.

 

 

1. a) What are greenhouse gases? Discuss their contribution to global warming. (3)
2. b) Write a method for the treatment of cyanide poisoning. (2)
3. Write short notes on
4. a) Anti-knocking agents b) Biogas                                                        (2+3)
5. Write the composition and uses of any five fractions obtain by the distillation of crude

petroleum.

PRAT-C

 

Answer any FOUR questions.                                                                      (4×10=40)

 

23. Explain zeolite process for the removal of hardness of water. Give any two advantage and

disadvantages of this process.                                                                                    (6+4)

1. a) Discuss the various steps involved in the glass manufacture.                          (8)

1. b) Give the composition of common glass. (2)

1. a) Explain how sterilization of water is carried out by chlorination. Give its advantage and

disadvantages.                                                                                                (6)

1. b) Describe the merits and demerits of using urea as fertilizer.                           (4)
2. a)Define calorific value of a fuel. (2)
3. b) Explain the construction and working of bomb calorimeter with a neat labelled

diagram.                                                                                                  (3+3+2)

1. a) What is natural gas? Name the different types of natural gas. Give the uses. (6)
2. b) Write a note on acid rain.                                                                                             (4)
3. a) Explain the biochemical effects of

(1) Carbon monoxide         (2) Ozone        (3) Lead                                (2+2+2)

1. List any four water quality parameters and indicate the permissible limits for the significant

parameters.                                                                                                        (4)

 

Go To Main page

      LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

WD 24

SIXTH SEMESTER – April 2009

CH 6611 / 6605 – INDUSTRIAL CHEMISTRY

 

 

 

Date & Time: 25/04/2009 / 9:00 – 12:00  Dept. No.                                                   Max. : 100 Marks

 

 

PART – A

Answer ALL questions:                                                                               (10 x 2 = 20)

 

1. Define calorific value of fuels.
2. Explain: Gobar electric cell.
3. How is 2, 4-D manufactured?
4. Give two examples for biofertilisers.
5. Define Break point chlorination.
6. Which dissolved salts contribute for permanent hardness?
7. What is acid rain? How is it caused?
8. Describe the toxicity of mercury.
9. What are the constituents of portland cement?
10. What is a luminous paint? Give an example.

PART – B

Answer any EIGHT questions:                                                                   (8 x 5 = 40)

 

11. Write a note on Producer gas.
12. How are coals classified? Give the composition of each type.
13. What is DDT? How is it manufactured? Indicate its uses.
14. Write a note on micronutrients and their role in the growth of plants.
15. How do you estimate calcium hardness in water by EDTA method?
16. How is water softened by zeolite process?
17. Explain the principle involved and application of reverse osmosis.
18. Describe how ozone depletion takes place in stratosphere.
19. Give an account of BOD determination in waste water.
20. What are the international standards for drinking water quality? How do they compare with ISI specifications?
21. Write a note on perfumes and flavouring agents.
22. Explain the functioning of molybdenum sulphide as a solid libricant.

PART – C

Answer any FOUR questions:                                                                     (4 x 10 = 40)

 

23. a) Describe the determination of calorific value of a fuel by Bomb calorimeter (6).
24. b) What are the uses of ETBE and MTBE (4).
25. a) How are (a) Super phosphate of lime (b) Triple superphosphate manufactured? Which is superior? Why?  (7)
26. b) What is BHC? How is it manufactured? (3)
27. a) Outline the process of refining of Petroleum (5)
28. b) How do you prepare Bordeaux mixture? What is its composition? Mention its use. (5)
29. a) How is total hardness of water estimated. (5)
30. b) How are suspended impurities and micro organism removed from water used for drinking purpose? (5)
31. a) Write a note on air pollution (5)
32. b) Explain the biochemical effects of nitrogen oxides (5)
33. a) What are abrasives? How are they classified? Give examples (5)
34. b) Write a note on pharmaceutical industries in India.

 

Go To Main page

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

SIXTH SEMESTER – APRIL 2011

CH 6611/CH 6605 – INDUSTRIAL CHEMISTRY

 

 

 

Date : 11-04-2011              Dept. No.                                                    Max. : 100 Marks

Time : 1:00 – 4:00

PART – A

 

Answer ALL questions.                                                                  (10 x 2 = 20 marks)

1. Explain the characteristics of anthracite coal.
2. How is hydrodesulphurisation carried out?
3.  What are plant micronutrients?
4. Give the preparation of Bordeaux mixture.

5. Define break point chlorination.
6. Mention the units in which hardness of water expressed.
7. Where do good ozone and bad ozone occur?
8. What is the role of Cotrell’s precipitator in controlling air pollution?
9. What are acid refractories?
10. Define flash point of a lubricant.

PART – B

 

Answer any EIGHT questions.                                                     (8 x 5 = 40 marks)

11. Define the term Octane number. How is it related to the structure of the molecules?
12. Describe the method of determination of calorific value of a fuel.
13. How is saccharin synthesised?
14. Describe the manufacture of 2,4 D.
15. Explain the principle and method of determination of temporary hardness of water by EDTA method.
16. How is water softening achieved by ion exchange process?
17. Describe the process of desalination.
18. What is enhanced green house effect? Compare the green house effect potentials of

different green house gases.

19. Explain the biochemical action of cyanide.
20. Discuss the effect of acid rain on plants and sea organisms.
21. What are primary and secondary explosives? Give an example for each.
22. What are abrasives? How is boron carbide prepared?

 

 

PART – C

Answer any FOUR questions                                                       (4 x 10 = 40 marks)

23. What is meant by cracking? How is fluidised bed catalytic cracking carried out?

24.a. How is Gobar gas produced? Explain. (5)

1. How is triple superphosphate prepared? (5)
2. Describe the process of conversion of molasses into ethanol by fermentation.
3. Explain in detail various steps involved in the treatment of wastewater.
4. Define biochemical oxygen demand. How is BOD₅ of a wastewater sample determined?
5. a. Mention the purpose of adding plasticizer and stabilizer to plastics. (5)
6. How is Portland cement manufactured? (5)

Go To Main Page

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

SIXTH SEMESTER – APRIL 2012

CH 6611/CH 6605 – INDUSTRIAL CHEMISTRY

 

 

 

Date : 23-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

 

Answer ALL questions:                                                                                        (10 x 2 = 20 marks)

 

1. Mention the composition of gobar gas.
2. List out the characteristics of anthracite coal.
3. What are mixed fertilizers?
4. What are the advantages of saccharin as a sugar substitute?
5. What is break point chlorination?
6. How is the use of secondary treatment related to COD to BOD ratio?
7. What is acid rain? How is it caused?
8. Assigning reasons, list out the conditions for the dilution of wastewater sample in the

determination of its BOD.

9. How are refractories classified?
10. What are bonded abrasives?

PART – B

 

Answer any EIGHT questions:                                                                        (8 x 5 = 40 marks)

 

11. How is calorific value of a fuel determined?
12. What is meant by knocking in internal combustion engines? How is it related to octane

number?

13. How is DDT manufactured?
14. Explain the process of refining and grading of sugar.
15. How is water softened by lime soda process?
16. Explain the process of reverse osmosis.
17. What are the disadvantages of using hard water?
18. Explain the biochemical effect of carbon monoxide.
19. How does nitric oxide contribute to the stratospheric ozone depletion? Explain using

equations.

20. What is enhanced green house effect? Compare the green house effect potentials of

different green house gases.

 

21. What are the chief constituents of a paint? What are their functions?
22. Describe the manufacture of carborundum and boron carbide.

 

PART – C

 

Answer any FOUR questions:                                                                           (4 x 10 = 40 marks)

 

23. What is meant by cracking process with respect to petroleum industry? How is catalytic

cracking carried out?

24. Explain with a help of a block diagram, the refining process of crude oil.
25. Describe the process of production of ethanol from molasses by fermentation.
26. How is temporary hardness of water determined by EDTA method?
27. Define COD. How is COD of a sample of wastewater determined?
28. a) What are primary and secondary explosives? Give an example for each. (5)
29. b) How 2,4 D manufactured?                                                                                                         (5)

 

 

Go To Main page