FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO POST
IN BPS-17 UNDER THE FEDERAL GOVERNMENT, 1980
GENERAL KNOWLEDGE, PAPER – I EVERYDAY SCIENCE
Time Allowed: 2 Hours Maximum Marks: 50
Note: (i) Answer any ten questions. All question carry equal marks. Be brief and to the point.
- How is it that by simply pressing the brake of a car with the foot, the vehicle is stopped?
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Describe the principle of a simple clock and the way it measures time.
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How does a guitar or a flute produce music?
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How were huge blocks of stone raised to build the Pyramids? Attempt a possible mechanism.
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What makes electric door-bell ring?
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How are ripe, sweet mangoes produced though various stages, by mango trees in summer?
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What are transformers? Why are they used? Indicate their working.
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Differentiate between: (a) air-borne and water-borne diseases. (b) Smallpox and measles. (c) diarrhoea and dysentery.
- Differentiate between: (a) glacier and iceberg. (b) isotherms and isobars. (c) delta and estuary.
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What is weathering and erosion? What steps can be taken to prevent erosion of various kinds?
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What is remote-sensing? How is it done through satellites?
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They eye is the best camera. Elucidate this statement scientifically.
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What are fjords? Explain the existence of many fjords in a country like Norway.
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Why do green leaves of trees turn brown and fall in Autumn.
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Name the steps involved in silver-plating a soon.
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How does a top spin without falling down? Name an explanation of this phenomenon.
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How does a walkie-talkie work? Mention its uses.
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What is the utility of lunge in the human body? How does their structure help in performing their functions?
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Indicate the process of refining crude petroleum in a refinery.