Chemistry MCQs

Page No. 81

What is the simplest form of matter ?


aGas

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bLiquid

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cSolid

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dSemi solid

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View Answer Gas

Critical temperature for different gases is different and depends upon______________?


aSize of molecule

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bShape of molecule

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cIntermolecular attractions

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dAll of the above

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View Answer All of the above

The diffusion of gases at absolute zero will be________________?


aUnchanged

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bSlightly decreased

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cSlightly increased

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dZero

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View Answer Zero

At constant temperature the pressure of an ideal gas is doubled its density becomes_______________?


aHalf

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bDouble

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cSame

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dNone

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View Answer Double

The introduction of Kelvin scale in thermodynamic is according to_______________?


aBoyles law

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bCharles law

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cDaltons law

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dGrahams law

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View Answer Charles law

Which one has the lowest density at room temperature ?


aNe

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bNH3

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cN2

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dCO

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View Answer NH3

Under what conditions the gases deviate from the ideal behavior ?


aHigh temperature

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bLow temperature

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cHigh pressure

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dB and C

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View Answer B and C

Ideal gasses have all the following characteristics except ?


aAbsence of intermolecular forces

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bCollisions among the molecules of an ideal gas are perfectly elastic

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cThe molecules occupy no space

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dAll of the above are correct

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Which of the following is not considered as an intermolecular force between molecules ?


aCoordinate covalent bonds

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bHydrogen bonds

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cDebye forces

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dLondon dispersion forces

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What is the relative rate of effusion of CO and CO2 ?


aCO is 1.25 times faster than CO2

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bCO is 3.75 times faster than CO2

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cCO is 1.25 times faster than CO

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dBoth diffuse at the same rate

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