Everyday Science CSS Paper 1982

FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO POST
IN BPS-17 UNDER THE FEDERAL GOVERNMENT, 1982
GENERAL KNOWLEDGE, PAPER – I EVERYDAY SCIENCE
Time Allowed: 2 Hours Maximum Marks: 50

Note: Attempt Eleven questions in all. Question No.1 is compulsory. All questions carry equal marks.

1. Write a short essay on Science and Society

2. Describe briefly the achievements of any Five of the following scientists:
   (a) Ibn Al Hashem (b) Al Biruni (c) Darwin (d) Pasteur (e) Rontgen (f) Fleming (g) Banting

3. Fill in the blanks:
   (a) The conversion of non-diffusible substances into diffusible ones by the action of enzymes is called ____ .
   (b) Saliva helps in the digestion of ____ .
   (c) When a person can see nearer objects but not the distant ones, he is said to be suffering from ____ .
   (d) ____ is the result of rapid uncontrolled multiplication of cells.
   (e) Nitric acid is principally used for the manufacture of ____ .
   (f) In Pakistan, sulphur is found in _____ .
   (g) Diamond is the purest naturally occurring crystalline from of ____ .
   (h) The brown colour of the rust is because of ____ .
   (i) Caustic soda is extensively used for making ____ .
   (j) The planet nearest the sun is ____ .

4. Write notes on any Five of the following:
   (a) Peristalsis (b) Blood pressure (c) Reflex action (d) Oceanography (e) Bleaching powder (f) Cellulose (g) Early Bird (h) Stratosphere

5. How are characters transmitted from parents to offspring?
   OR
   What do you know about blood groups in a man?

6. How do plants synthesize their food?

7. What is a virus? Describe any twO viral diseases in man.

1. What do you know about natural defence against inflections?

2. Differentiate between any three of the following:
   (a) Inoculation and vaccination
   (b) Cast iron and wrought iron
   (c) Optical telescope and radio telescope
   (d) Isotherms and isobars
   (e) Troposphere and tropopause
   (f) Weather and climate.

3. How were vitamins discovered? Describe any two deficiency disease in a man caused by lack of vitamins.

4. What is soil erosion? What are its ill-effects?How can the erosion be reduced?

12 What are the uses of the following chemicals?
(a) Sodium Carbonate (b) Hydrochloric Acid c) Sodium Bi-Carbonate (d) Sulphuric Acid

1. How is nuclear energy produced?

2. Name any five planets which revolve round the Sun.

3. (a) How many colours are seen in a rainbow? Why is rainbow seen after rain?
   (b) Why is cooking ordinarily difficult on mountains?
   (c) Why does an electric bulb make a bang when it is broken
   (d) Why does water gets cooled in earthen pitchers?

4. What is biogas? How is it commercially produced? What are its use?

5. Why do we use woollen cloths for protecting ourselves from cold?

6. Explain the principles of any Two of the following appliances:
   (a) Desert cooler (b) Television (c) Radar (d) Pressure suit