Everyday Science CSS Paper 1983

FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO POST
IN BPS-17 UNDER THE FEDERAL GOVERNMENT, 1983
GENERAL KNOWLEDGE, PAPER – I EVERYDAY SCIENCE
Time Allowed: 2 Hours Maximum Marks: 50

Note: Attempt Eleven questions in all. Question No.1 is compulsory. Be brief and to the point. All questions carry equal marks. Except question No.1, which carries 10 marks.

1. Fill in the blanks:
   (a) The uncharged particle in atom is called ____ (Proton, Electron, Neutron)
   (b) The smaller Planet of the Solar System is ____ (Venus, Mercury, Pluto, Uranus)
   (c) The ____ causes sunburn and sun-tan (Ultraviolet light, Alpha radiation, Gamma radiation)
   (d) The lightest gas is ____ (Hydragen, helium, Neon)
   (e) Bi-focal lens was invented by ____ (Newton, Galileo, Benjamin Franklin)
   (f) ____ is the best conductor of electricity. (Copper, Silver, Iron, Zinc)
   (g) The _____ cause maximum spoilage to our cereal crops. (Bacteria, Fungi, Viruses)
   (h) A true fruit is derived from the ____ of a lower. (Ovary, Ovule, Thalamus)
   (i) Hydrophobia is a symptom of ____ disease. (Malaria, Smallpox, Rabies)
   (j) Blood cells are manufactured by ____ of the body. (Liver, Spleen, Bone-marrow)

2. Discuss the principles of the Fire Extinguisher. What chemicals are used in it?

3. What is the difference between a Mixture and a Compound? Which of the following are mixtures and which are compounds:
   (i) Air (ii) Sugar (iii) Cement (iv) Water (v) Brass (vi) Stainless Steel

4. Give common names of the following Chemicals:
   (i) Sodium Chloride (ii) Copper Sulphate (iii) Sodium Bicarbonate (iv) Potassium Hydroxide (v) Calcium Carbonate (vi) Sodium hydroxide (vii) Calcium Sulphate (viii) Calcium Ox chloride

5. Name the industry in which each of following chemicals is used:
   (i) Gypsum (ii) Sodium meta bisulphate (iii) Silica (iv) Sodium Hydroxide

6. Why are fertilizers used? Give chemical names of three nitrogen and one phosphorous fertilizer.

7. Describe the principle of any Two of the following:
   (i) Rocket (ii) Pressure Cooker (iii) Cream Separator (iv) Electric Fuse

8. Distinguish clearly between any Two of the following:
   (i) Water and Heavy Water (ii) X-rays and Gamma rays (iii) Erosion and Corrosion (iv) Epidemic and Endemic

9. Why is an electric bulb less efficient than an fluorescent tube?

10. Associate the correct name of the scientist associated with the following inventions

Inventions
(i) Diesel Engine
(ii) Electric Bulb
(iii) Radio Telephone
(iv) Transistor
(v) Microphone
(vi) Laser
(vii) Television
(vii) Fountain Pen

Scientists
Thomas Edison
Lee De Forest
E. Graham Bell
Rudolph Diesel
Charles H.Town
John H. Baird
Bardeen Shockley
Waterman

1. What is meant by Ultrasonic Boom? Explain.

2. What is meant by curing Tobacco?

3. What are the different causes of Food-Poisoning?

4. Define Irrigation. What are different possible sources of irrigation water?

5. Which part of the Plant are the following:
   (i) Carrot (ii) Turnip (iii) Ginger (iv) Potato (v) Cinnamon (vi) Cucumber (vii) Saffron (viii) Peas

6. What are the different methods of food preservation?

7. What are the different conditions for growing cotton?

8. Describe following Psychological terms:
   (i) Phobia (ii) Mania (iii) Hysteria (iv) Schizophrenia

9. Give a brief account of leprosy disease.

10. Write concise note on Reflex Arc.

11. Answer the following:
    (i) Name any metal which is liquid at room temperature.
    (ii) In space travel, the unit of distance is light-year. What does this mean?
    (iii) What is the relationship between a milligram and a microgram?
    (iv) Name the principle due to which ships float on water.