## Which of the following non-flow reversible compression processes require maximum work

B) Isothermal process

C) Isobaric process

D) All require the same work

A) Positive

B) Negative

C) Zero

D) Infinity

## Cp – Cv = R is valid for ——- gases?

A) Ideal

B) Very high pressure

C) Very low temperature

D) All of the above

## If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

A) Volume

B) Enthalpy

C) Both A. & B

D) Neither A. nor B

## The activity coefficient is a measure of the

A) Departure from ideal solution behavior

B) Departure of the gas phase from ideal gas law

C) Vapour pressure of the liquid

D) None Of the Above

## Fugacity and pressure are numerically equal when the gas is

A) In standard state

B) At high pressure

C) At low temperature

D) In the ideal state

## The third law of thermodynamics is concerned with the

A) Value of absolute entropy

B) Energy transfer

C) Direction of energy transfer

D) None Of the Above

## If two gases have the same reduced temperature and reduced pressure then they will have the same

A) Volume

B) Mass

C) Critical temperature

D)  Reduced volume

## The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture”. This is

A) The statement as per Gibbs-Helmholtz

B) Called the Lewis-Randall rule

C) Henry’s law

D) None Of the Above

## The internal energy of an ideal gas is a function of its ——– only?

A) Molecular size

B) Volume

C) Pressure

D) Temperature