Chemistry MCQs

Page No. 96

Rising of a wetting liquid in a capillary tube is due to__________________?


aSurface tension

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bCohesive forces

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cAdhesive forces

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dViscosity

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View Answer Adhesive forces

The boiling point increases down the zero group element due to_________________?


aIon dipole forces

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bLondon forces

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cHydrogen bonding

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dDipole dipole forces

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View Answer London forces

When water freezes at 0°C its density decreases due to_______________?


aChange of bond angles

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bCubic structure of ice

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cEmpty space present in the structure of ice

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dChange of bond length

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The conversion of vapours back into their liquid state is called__________________?


acrystallization

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bevaporation

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cvaporization

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dcondensation

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View Answer condensation

Steam causes more sever burn than the boiling water because it possesses _________________?


aLatent heat of fusion

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bLatent heat of vaporization

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cLatent heat of sublimation

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dAll of the above

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The density of water may be__________________?


aEqual to that of ice

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bGreater than that of ice

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cLess than that of ice

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dAll are possible

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Which one is a conductor but is not malleable ?


aIron

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bGraphite

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cSilver

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dPlatinum

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View Answer Graphite

Which one of the following does not show hydrogen bonding?


aWater

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bEthyl alcohol

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cPhenol

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dDiethyl ether

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View Answer Diethyl ether

Which one is false for evaporation ?


aSurface phenomenon

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bContinuous

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cExothermic

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dCause cooling

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View Answer Exothermic

When the atoms of third layer are arranged in such a way that they directly lie above the atoms of first layer then this arrangement is called_________________?


aABAB (hexagonal)

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bABCABC (Cubic)

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cOrthor hombic

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dRhombohedral

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View Answer ABAB (hexagonal)

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