Everyday Science MCQs

Page No. 102

What are considered the building blocks of matter?


aMolecules


bProtons


cElements


dAtoms


View Answer Atoms

All matter is made of ___________?


aAir


bWater


cVibrations


dAtoms


View Answer Atoms

_________ is anything that takes up space and has mass.


aMatter


bGravity


cEnergy


dPlasma


View Answer Matter

A device that converts mechanical energy into electric energy is called_______?


aMotor.


bTransformer.


cCoil.


dGenerator.


View Answer Generator.

The blue colour of clear sky is due to_______________?


aReflection of light


bRefraction of light


cDiffraction of light


dDispersion of light


View Answer Dispersion of light

Copper is used in the production of___________?


aBrick kilns


bChildren toys


cKitchen utilities


dElectric wires


View Answer Electric wires

When water is filled in a bottle and is allowed to freeze, the bottle breaks because


aWater expands on freezing


bBottle contracts at freezing point


ctemperature outside the bottle is less than that inside the bottle.


dNone of the above



A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to__________?


aProp him up if he falls


bSpread out his weight and reduce the pressure on the rope


cAdd extra weight to keep the rope tightly stretched


dTo keep the Center of gravity always above vertically above the rope



The sky appears blue because the earth’s atmosphere __________?


aScatters blue light


bReflects blue light


cTransmits blue light


dHas actual blue cover


View Answer Scatters blue light

Steering of a car involves?


aA single force


bTwo forces acting in the same direction


cTwo forces acting along different lines and in opposite direction.


dA pair of forces acting along the same line and in opposite direction



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