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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