The internal energy of an ideal gas depends on
A.its pressure only
B.its volume only
C.its temperature only
D.the size of its molecules only
Category: Chemical Thermodynamics Mcqs
For values of compressibility factor (Z) less than 1 the volume of a real gas
A.is always greater than the volume predicted by ideal-gas law
B.is always less than the volume presicated by ideal-gas law
C.is always equal to the volume predicted by ideal gas law
D.may be less than equal to or greater than the volume predicted by ideal-gas law depending on the nature of the gas
Intensive properties are the properties whose magnitude
A.depends on the quantity of material involved
B.does not depend on the quantity of material involved
C.depends on the path followed
D.none of the above
When the temperature of an idealgas is increased from 27?C to 927?C the kinetic energy will be
A.same
B.twice
C.eight times
D.four times
The ?H is constant in a chemical change and independent upon the path and time taken. This is known as
A.Hess law of constant heat summation
B.Lavoisier and Laplace law
C.Vant Hoffs law
D.Gibbs law
For substances which are incompressible CP and CV are related as
A.Cp = Cv
B.Cp >> Cv
C.Cp << Cv
The enthalpy of an ideal gas
A.depends on its temperature only
B.depends on its pressure only
C.may decrease while the internal energy increases
D.depends on its volume only
A gas can be liquefied by pressure alone only when its temperature is
A.higher than its critical temperature
B.equal to or higher than its critical temperature
C.less than or equal to its critical temperature
D.less than its critical temperature
In reversible adiabatic processes
A.pressure remains constant
B.enthalpy remains constant
C.temperature remains constant
D.heat transfer between system and its surroundings does not occur.
Imperfect gases are those
A.which contain impurities
B.which do not obey Charles and Boyles law
C.whose molecules are not spherical
D.whose molecules cannot be regarded as point masses
