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)

 

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