Everyday Science MCQs

Page No. 128

Each day human body breathe in __________ liters of air.


a5,000 to 10,000

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b10,000 to 15,000

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c15,000 to 20,000

✓


d20,000 to 25,000

✖


View Answer 15,000 to 20,000

The most abundant element in the Earth’s crust is __________?


aOxygen

✓


bHydrogen

✖


cCarbon Dioxide

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dSilicon

✖


View Answer Oxygen

The most abundant element in the universe is __________.


aOxygen

✖


bHydrogen

✓


cCarbon Dioxide

✖


dSilicon

✖


View Answer Hydrogen

The average adult has a blood volume of about __________ liters.


a4

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b5

✓


c6

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d7

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View Answer 5

The gas used in a refrigerator to cool water is___________?


aNitrogen

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bCarbon dioxide

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cMethane

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dAmmonia

✓


View Answer Ammonia

The Sun is a __________?


aStar

✓


bPlanet

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cAsteroid

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dMeteor

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View Answer Star

A device which converts chemical energy into electrical energy is called __________?


amotor

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bgenerator

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cmoving-coil meter

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dbattery

✓


View Answer battery

Radioactivity was discovered by __________?


aKelvin

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bThomson

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cRutherford

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dBacquerel

✓


View Answer Bacquerel

The lifespan of Red Blood Cells is __________ days?


a60

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b120

✓


c180

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d240

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View Answer 120

For a fixed mass of gass at constant temperature, if we decrease volume, the pressure will _________?


aalso decrease

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bincrease

✓


cremains constant

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dnone of these

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View Answer increase

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