Which of the following element is used as a moderator in a nuclear reactor?
A. Light water
B. Dense water
C. Fresh water
D. Heavy water
Correct Answer: Heavy water
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Where does the ozone layer lie in the atmosphere?
A. Troposphere
B. Stratosphere
C. Mesosphere
D. Thermosphere
Correct Answer: B. Stratosphere
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Meteorology is the study of_____________.
A. Seasons
B. Atmosphere
C. Air and sounds
D. Winds and cloud (more…)
The principal constituent of the atmosphere of the Earth is____________.
A. Oxygen
B. Carbon
C. Hydrogen
D. Nitrogen
Einstein’s famous equation which states that mass and energy are interchangeable is__________.
A. E = mc2
B. E = cm2
C. M = ec2
D. M = ce2
CNG stands for________________.
A. Converted Natural Gas
B. Conduced Natural Gas
C. Conducted Natural Gas
D. Compressed Natural Gas (more…)
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