Everyday Science MCQs

5120 MCQs  (Page 138 of 512)

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In 2013, Planck measured the age of the universe at ___________?
A. 13.82 billion years
B. 4.53 billion years
C. 4.6 billion years
D. 4.53 billion years
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Human beings use _______ liters of pure oxygen per day.
A. 550
B. 2500
C. 1,050
D. 10,000
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The yellow colour in photochemical smog is due to the presence of____________?
A. Sulphur dioxide
B. Carbon dioxide
C. Nitrogen dioxide
D. Cfc’s
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Why normal rain is slightly acidic?
A. Due to presence of dust in air
B. Carbon dioxide and water in clouds react to form carbonic acid
C. Ozone depletion
D. All of these
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Disolved oxygen (DO) in water should be?
A. 400 to 800 ppm
B. 4000 to 8000 ppm
C. 0.4 to 0.5 ppm
D. 4 to 5 ppm
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Montreal Protocol 1987 was__________?
A. Treaty among nations to reduce nuclear arsenals
B. Climate control treaty
C. Treaty to protect ozone layer
D. Trade policy about tarrifs
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How many meters are in one mile?
A. 1409.34
B. 1509.34
C. 1609.34
D. None of above
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As a result of which treaty, ozone hole in Antarctica is slowly healing?
A. Koyoto protocol
B. Ottawa treaty
C. Montreal protocol
D. Oslo accord
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The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect
A. Nitrogen dioxide (no2)
B. Chlorofluorocarbons (cfcs)
C. Methane (ch4)
D. High-fructose corn syrup (hfcs)
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In plants there are_______basic types of tissues?
A. 2
B. 3
C. 4
D. None of these
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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