State functions

Path functions

Intensive properties

Extensive properties

B. Path functions

0.15

1.5

4.5

6.5

Activity co-efficient is dimensionless.

In case of an ideal gas, the fugacity is equal to its pressure.

In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component.

The fugacity co-efficient is zero for an ideal gas

No heat and mass transfer

No mass transfer but heat transfer

Mass and energy transfer

None of these

Becomes zero

Becomes infinity

Equals 1 kcal/kmol °K

Equals 0.24 kcal/kmol °K

Both the processes are adiabatic

Both the processes are isothermal

Process A is isothermal while B is adiabatic

Process A is adiabatic while B is isothermal

Carnot

Air

Absorption

vapour-ejection

_{S} = - (∂P/∂S)_{V}

_{T} = - (∂V/∂T)_{P}

_{P} = (∂T/∂P)_{S}

_{T} = (∂P/∂T)_{V}

1

< 1

> 1

>> 1

_{e} 4

_{10} 4

_{v} log_{10} 4

_{v} log_{e} 4

Same

Doubled

Halved

One fourth of its original value

Decrease in velocity

Decrease in temperature

Decrease in kinetic energy

Energy spent in doing work

0

1

2

3

Volume of the liquid phase is negligible compared to that of vapour phase

Vapour phase behaves as an ideal gas

Heat of vaporisation is independent of temperature

All (A), (B) & (C)

Infinity

Minus infinity

Zero

None of these

F = A + PV

F = E + A

F = A - TS

F = A + TS

Enthalpy

Entropy

Pressure

None of these

Enthalpy remains constant

Entropy remains constant

Temperature remains constant

None of these

Escaping tendencies of the same substance in different phases of a system

Relative volatility of a mixture of two miscible liquids

Behaviour of ideal gases

None of these

Is the most efficient of all refrigeration cycles

Has very low efficiency

Requires relatively large quantities of air to achieve a significant amount of refrigeration

Both (B) and (C)

Enthalpy

Internal energy

Either (A) or (B)

Neither (A) nor (B)

Adiabatic

Isothermal

Isometric

None of these

P + F - C = 2

C = P - F + 2

F = C - P - 2

P = F - C - 2

Air compressor

Liquid cooling system of an automobile

Boiler

None of these

Sub-cooled

Saturated

Non-solidifiable

None of these

Heat capacity of a crystalline solid is zero at absolute zero temperature

Heat transfer from low temperature to high temperature source is not possible without external work

Gases having same reduced properties behaves similarly

None of these

Internal energy

Enthalpy

Entropy

All (A), (B) & (C)

Joule-Thomson co-efficient

_{p})

co-efficient of thermal expansion

_{V})

Solubility increases as temperature increases

Solubility increases as temperature decreases

Solubility is independent of temperature

Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution

0

1

2

3

Specific heat

Latent heat of vaporisation

Viscosity

Specific vapor volume