Balochistan Public Service Commission
Samungli Road, Quetta Cantt.
COMPETITIVE EXAMINATION FOR THE POST(s) OF BCS (EB) OFFICER B-17
APPLIED CHEMISTRY
Marks: 150
Saturday, March 17, 2001 (12:30 PM)
Time: 03 Hours
Note: Attempt any FIVE questions. All questions carry equal marks.
Q-1. (a) Describe various types of Glass and explain the role of fluxes in the manufacturing of Glass?
(b) What are Fertilizers? Give name and formulae of different Nitrogenous Fertilizers?
Q-2. (a) Describe classification of Plastics and give examples.
(b) Describe the preparation of PVC and Teflon?
Q-3. (a) Name the ingredients of Paints. Give the types of Paints?
(b) What is the function of Oil in Paints?
Q-4. (a) What are the causes of spoilage of food? How the causes can be controlled?
(b) Give the methods of preservation of fruits and vegetables?
Q-5. (a) Write the methods for manufacturing Soap. Describe the common types of soap?
(b) What are detergents? Give the name of raw materials used in the preparation of detergent?
Q-6. (a) What is Varnish? Write down the raw material used for the preparation of varnish? Also describe its preparation?
(b) Write notes on the followings:
(i) Ceramics (ii) Road Tar
Q-7. (a) What products are obtained by carbonization of Coal? Explain in detail.
(b) What is Fermentation? Give the fermentation of Alcohol.
Q-8. (a) How Caustic Soda is prepared on large scale?
(b) Give the uses of Caustic Soda?
Q-9. (a) How Sulphuric acid is prepared by Lead Chamber process? Describe in detail.
(b) Give the importance of Sulphuric acid in Industry?
Q-10. Write a note on any two of the following in detail:
(i) Ghee (ii) Matches (iii) Paper
Good Luck
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