Everyday Science MCQs

Page No. 56

In an oil lamp, the oil rises up in the wick due to?


aCapillary action


bAtmospheric pressure


cViscosity of oil


dChange in temperature


View Answer Capillary action

Heating element of an electric heater is made up of___________?


aTungsten


bGraphite


cChromium


dNichrome


View Answer Nichrome

During a total solar eclipse there is most likely to be_____________?


aA decrease in the rate of photosynthesis


bAn increase in the rate of photosynthesis


cA decrease in the rate of respiration


dNo effect on either photosynthesis or respiration



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 centre of gravity always vertically above the rope



The property by virtue of which metals can be beaten into thin sheets is known as?


aDuctility


bMalleability


cConductivity


dDensity


View Answer Malleability

A man is standing on a weighing machine in a lift which is moving. The weighing machine will slow MINIMUM reading when, the lift is moving?


aUpward with uniform speed


bDownward with uniform acceleration


cIn a free fall due to failure of the lift mechanism


dNone of these



A slow-running pendulum clock can be speeded up by_______________?


aIncreasing the length of the rod


bIncreasing the weight of the bob


cReducing the length of the rod


dReducing the weight of the bob



The major component of honey is_________?


aGlucose


bSucrose


cMalttose


dFructose


View Answer Fructose

If there is no capillarity?


aIt would be impossible to use a kerosene lamp


bThe blotting paper would fail to function


cThere would have been no plants on earth


dAll of the above


View Answer All of the above

Which term describes the emission of light by a living organism?


aBioluminescence


bNatural light


cIllumination


dMimicry


View Answer Bioluminescence

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