1.987 cal/gm mole °K

1.987 BTU/lb. mole °R

Both (A) and (B)

Neither (A) nor (B)

C. Both (A) and (B)

Low pressure and high temperature

Low pressure and low temperature

High pressure and low temperature

High pressure and high temperature

Triple point

Boiling point

Below triple point

Always

A gas may have more than one inversion temperatures

The inversion temperature is different for different gases

The inversion temperature is same for all gases

The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity

The amount of work needed is path dependent

Work alone cannot bring out such a change of state

The amount of work needed is independent of path

More information is needed to conclude anything about the path dependence or otherwise of the work needed

More in vapour phase

More in liquid phase

Same in both the phases

Replaced by chemical potential which is more in vapour phase

Adiabatic

Isothermal

Isometric

None of these

The same

Less than

Greater than

Different than

Decreases in all spontaneous (or irreversible) processes

Change during a spontaneous process has a negative value

Remains unchanged in reversible processes carried at constant temperature and pressure

All (A), (B) and (C)

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)

Cold reservoir approaches zero

Hot reservoir approaches infinity

Either (A) or (B)

Neither (A) nor (B)

_{p})

_{v})

Joule-Thompson co-efficient

None of these

High thermal conductivity

Low freezing point

Large latent heat of vaporisation

High viscosity

The melting point of wax

The boiling point of a liquid

Both (A) and (B)

Neither (A) nor (B)

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)

_{2})

_{V} = - E/T_{2}

Both (A) and (B)

Neither (A) nor (B)

_{V}

Entropy change

Gibbs free energy

None of these

Trouton's ratio of non-polar liquids is calculated using Kistyakowsky equation

Thermal efficiency of a Carnot engine is always less than 1

An equation relating pressure, volume and temperature of a gas is called ideal gas equation

None of these

0°C and 760 mm Hg

15°C and 760 mm Hg

20°C and 760 mm Hg

^{2}

Vapor pressure

Specific Gibbs free energy

Specific entropy

All (A), (B) and (C)

Simultaneous pressure & temperature change

Heating

Cooling

Both (B) and (C)

H = E - PV

H = F - TS

H - E = PV

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

Bertholet equation

Clausius-Clapeyron equation

Beattie-Bridgeman equation

None of these

Molar volume, density, viscosity and boiling point

Refractive index and surface tension

Both (A) and (B)

None of these

RT d ln P

RT d ln f

R d ln f

None of these

Internal energy

Enthalpy

Gibbs free energy

Helmholtz free energy

Reversible

Irreversible

Isothermal

Adiabatic

_{S} = (∂p/∂S)_{V}

_{S} = (∂V/∂S)_{P}

_{V} = (∂S/∂V)_{T}

_{P} = -(∂S/∂P)_{T}

√(2KT/m)

√(3KT/m)

√(6KT/m)

3KT/m

State function

Macroscopic property

Extensive property

None of these