Chemistry MCQs

Page No. 81

What is the simplest form of matter ?


aGas


bLiquid


cSolid


dSemi solid


View Answer Gas

Critical temperature for different gases is different and depends upon______________?


aSize of molecule


bShape of molecule


cIntermolecular attractions


dAll of the above


View Answer All of the above

The diffusion of gases at absolute zero will be________________?


aUnchanged


bSlightly decreased


cSlightly increased


dZero


View Answer Zero

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


aHalf


bDouble


cSame


dNone


View Answer Double

The introduction of Kelvin scale in thermodynamic is according to_______________?


aBoyles law


bCharles law


cDaltons law


dGrahams law


View Answer Charles law

Which one has the lowest density at room temperature ?


aNe


bNH3


cN2


dCO


View Answer NH3

Under what conditions the gases deviate from the ideal behavior ?


aHigh temperature


bLow temperature


cHigh pressure


dB and C


View Answer B and C

Ideal gasses have all the following characteristics except ?


aAbsence of intermolecular forces


bCollisions among the molecules of an ideal gas are perfectly elastic


cThe molecules occupy no space


dAll of the above are correct



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


aCoordinate covalent bonds


bHydrogen bonds


cDebye forces


dLondon dispersion forces



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


aCO is 1.25 times faster than CO2


bCO is 3.75 times faster than CO2


cCO is 1.25 times faster than CO


dBoth diffuse at the same rate



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