The two specific heats at constant pressure and at constant volume are equal at
A.0?C
B.0 K
C.0?F
D.0?R
Category: Chemical Thermodynamics Mcqs
The number of molecules present in 1 g mol of a gas is known as
A.atomic number
B.vapour density
C.Avogadro number
D.none of the above
A gas is termed an ideal gas if it obeys the gas equation PV = RT. When do you expect a gas to show deviation from ideality?
A.At high poressures and low temperatures
B.At low poressures and low temperatures
C.At high poressures and high temperatures
D.At low poressures and high temperatures
In a reversible shaft work process
A.the temperature forces are balanced
B.the pressure forces are balanced
C.the mechanical forces are balanced
D.all the forces are balanced
At the critical point of a substance
A.there is no distinction between liquid and vapour phases
B.the densities of the liquid and vapour become equal
C.the surface tension vanishes
D.all of these asnwers
In absence of experimental values Kopps rule may be used to calculate the heat capacity of
A.gases only
B.liquids only
C.solids only
D.gases liquids and solids
For an ideal gas x in the equation PV = xT is a constant which depands upon
A.the number of molecules present only
B.the type of gas only
C.both (a) and (b)
D.neighter (a) nor (b)
At absolute zero temperature
A.mass of the gas is zero
B.volume of the gas is zero
C.pressure of the gas is zero
D.all a b and c
