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Thermodynamics
Tricky Thermodynamics
Quiz 1
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Q.1
An equation of state can also be used to calculate internal energy, enthalpy and entropy.
a) true
b) false
Q.2
The changes in properties like T,p and v
a) depend on the path taken
b) are independent of path
c) depends on the property to be evaluated
d) none of the mentioned
Q.3
When does an equation of state reduces to the ideal gas equation?
a) when the pressure approaches zero
b) when the temperature approaches infinity
c) both of the mentioned
d) none of the mentioned
Q.4
When does the compressibility factor take the value 1?
a) for an ideal gas
b) when pressure approaches zero
c) when temperature approaches infinity
d) all of the mentioned
Q.5
Which of the following statement is true?
a) for equation of state, the critical isotherm should have a point of inflection at the critical point
b) the isochore of an equation of state on a p-T diagram should be straight
c) both of the mentioned
d) none of the mentioned
Q.6
On a Z-p compressibility factor chart as p approaches zero, at the Boyle temperature the slope of the isotherm is
a) zero
b) unity
c) negative
d) positive
Q.7
On a Z-p compressibility factor chart as p approaches zero, the slope of the isotherm should be ____ at lower temperatures and ____ at higher temperatures.
a) positive, negative
b) negative, positive
c) negative, negative
d) positive, positive
Q.8
For the inversion curve, Joule-Kelvin coefficient is unity.
a) true
b) false
Q.9
According to the equation of state, the Boyle temperature is
a) 2.56*Tc
b) 2.50*Tc
c) 2.52*Tc
d) 2.54*Tc
Q.10
An isotherm of maximum slope on Z-p plot as p approaches zero is called the foldback isotherm and its value is
a) 10*Tc
b) 2*Tc
c) 5*Tc
d) 2.54*Tc
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