Everyday Science MCQs

Page No. 128

Each day human body breathe in __________ liters of air.


a5,000 to 10,000


b10,000 to 15,000


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


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


b5


c6


d7


View Answer 5

The gas used in a refrigerator to cool water is___________?


aNitrogen


bCarbon dioxide


cMethane


dAmmonia


View Answer Ammonia

The Sun is a __________?


aStar


bPlanet


cAsteroid


dMeteor


View Answer Star

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


amotor


bgenerator


cmoving-coil meter


dbattery


View Answer battery

Radioactivity was discovered by __________?


aKelvin


bThomson


cRutherford


dBacquerel


View Answer Bacquerel

The lifespan of Red Blood Cells is __________ days?


a60


b120


c180


d240


View Answer 120

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


aalso decrease


bincrease


cremains constant


dnone of these


View Answer increase

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