Science Test 3 General Science Aptitude
Science Test 3 General Science Aptitude
Question 1
Which of the following types radiations is absorbed by the upper layer of the atmosphere?
Infrared radiation is absorbed by the upper layer of the atmosphere.
Not clear enough?
Question 2
After long periods of use, a gray spot develops on the inside of a bulb. This is because_____?
The tungsten filament evaporates and deposits on the inside of the bulb as a gray spot.
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Question 3
Approximately, how many times each day do our heart valves open and close normally?
Heart valves open and close about 1,00,000 times daily in a healthy adult.
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Question 4
A nuclear reactor harnesses nuclear energy by_____?
Nuclear reactors harness energy through a controlled chain reaction.
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Question 5
Which one of the following raw material is used in the manufacture of foam used in mattresses, cushions, etc.?
Phenol is a key raw material in foam production for mattresses and cushions.
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Question 6
Permanent magnets can be made from_____?
Cobalt is one of the main elements used to make permanent magnets.
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Question 7
Atmospheric pressure exerted on the earth is due to the_____?
Atmospheric pressure is due to the gravitational pull of the Earth on the atmosphere.
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Question 8
Quantity of fresh air required for a man is_____?
A man requires about 1000 cubic feet of fresh air every 20 minutes.
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Question 9
Where does the oxygen that keeps us alive come from?
Oxygen is produced mainly through photosynthesis, where plants convert carbon dioxide into oxygen.
Not clear enough?
Question 10
Which one of the following metals pollutes the air of a city having large number of automobiles?
Lead pollution in cities is mainly from automobile exhausts.
Not clear enough?
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