Everyday Science MCQs

Page No. 56

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


aCapillary action

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bAtmospheric pressure

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cViscosity of oil

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dChange in temperature

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View Answer Capillary action

Heating element of an electric heater is made up of___________?


aTungsten

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bGraphite

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cChromium

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dNichrome

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View Answer Nichrome

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


aA decrease in the rate of photosynthesis

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bAn increase in the rate of photosynthesis

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cA decrease in the rate of respiration

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dNo effect on either photosynthesis or respiration

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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

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bSpread out his weight and reduce the pressure on the rope

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cAdd extra weight to keep the rope tightly stretched

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dTo keep the centre of gravity always vertically above the rope

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


aDuctility

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bMalleability

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cConductivity

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dDensity

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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

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bDownward with uniform acceleration

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cIn a free fall due to failure of the lift mechanism

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dNone of these

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


aIncreasing the length of the rod

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bIncreasing the weight of the bob

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cReducing the length of the rod

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dReducing the weight of the bob

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The major component of honey is_________?


aGlucose

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bSucrose

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cMalttose

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dFructose

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View Answer Fructose

If there is no capillarity?


aIt would be impossible to use a kerosene lamp

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bThe blotting paper would fail to function

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cThere would have been no plants on earth

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dAll of the above

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View Answer All of the above

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


aBioluminescence

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bNatural light

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cIllumination

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dMimicry

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View Answer Bioluminescence

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