Everyday Science MCQs

Page No. 66

How many meters are in one mile?


a1409.34

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b1509.34

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c1609.34

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dNone of the above

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View Answer 1609.34

Montreal Protocol 1987 was__________?


aTreaty among nations to reduce nuclear arsenals

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bClimate control treaty

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cTreaty to protect ozone layer

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dTrade policy about tarrifs

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Disolved oxygen (DO) in water should be?


a400 to 800 ppm

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b4000 to 8000 ppm

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c0.4 to 0.5 ppm

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d4 to 5 ppm

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View Answer 4 to 5 ppm

Why normal rain is slightly acidic?


adue to presence of dust in air

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bcarbon dioxide and water in clouds react to form carbonic acid

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cOzone depletion

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dAll of the above

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The yellow colour in photochemical smog is due to the presence of____________?


aSulfur dioxide

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bCarbon dioxide

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cNitrogen dioxide

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dCFCs

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View Answer Nitrogen dioxide

Human beings use _______ liters of pure oxygen per day.


a550

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b525

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c1,050

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d10,000

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View Answer 550

In 2013, Planck measured the age of the universe at ___________?


a13.82 billion years

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b4.53 billion years

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c4.6 billion years

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d4.63 billion years

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View Answer 13.82 billion years

Jupiter has ________ known moons.


a62

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b73

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c79

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d53

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View Answer 79

The study of heavenly bodies is known as_________?


aAstrology

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bAstronauts

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cAstronomy

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dAstrophysics

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View Answer Astronomy

kilohertz (kHz) is a unit which measures?


aPower used by a current of one ampere

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bElectromagnetic radio wave frequencies

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cVoltage

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dElectric resistance

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