λb/Tb
Tb/λb
√(λb/Tb)
√(Tb/λb)
A. λb/Tb
Endothermic
Exothermic
Isothermal
Adiabatic
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)
Positive
Negative
Zero
May be positive or negative
States that n1dμ1 + n2dμ2 + ....njdμj = 0, for a system of definite composition at constant temperature and pressure
Applies only to binary systems
Finds no application in gas-liquid equilibria involved in distillation
None of these
12 P1V1
6 P1 V1
3 P1V1
P1 V1
Process must be isobaric
Temperature must decrease
Process must be adiabatic
Both (B) and (C)
(dF)T, p < 0
(dF)T, p > 0
(dF)T, p = 0
(dA)T, v < 0
Same in both the phases
Zero in both the phases
More in vapour phase
More in liquid phase
Virial co-efficients are universal constants
Virial co-efficients 'B' represents three body interactions
Virial co-efficients are function of temperature only
For some gases, Virial equations and ideal gas equations are the same
(∂P/∂V)T
(∂V/∂T)P
(∂P/∂V)V
All (A), (B) & (C)
Not a function of its pressure
Not a function of its nature
Not a function of its temperature
Unity, if it follows PV = nRT
Minimum number of degree of freedom of a system is zero
Degree of freedom of a system containing a gaseous mixture of helium, carbon dioxide and hydrogen is 4
For a two phase system in equilibrium made up of four non-reacting chemical species, the number of degrees of freedom is 4
Enthalpy and internal energy change is zero during phase change processes like melting, vaporisation and sublimation
Always exists
May exist
Never exists
Is difficult to predict
Maxwell's equation
Clausius-Clapeyron Equation
Van Laar equation
Nernst Heat Theorem
Simultaneous pressure & temperature change
Heating
Cooling
Both (B) and (C)
Heat capacity
Molal heat capacity
Pressure
Concentration
100
50
205
200
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
By throttling
By expansion in an engine
At constant pressure
None of these
Surface tension of a substance vanishes at critical point, as there is no distinction between liquid and vapour phases at its critical point
Entropy of a system decreases with the evolution of heat
Change of internal energy is negative for exothermic reactions
The eccentric factor for all materials is always more than one
Ideal
Real
Isotonic
None of these
Heat
Momentum
Energy
Work
Internal energy
Enthalpy
Gibbs free energy
Helmholtz free energy
Molal concentration difference
Molar free energy
Partial molar free energy
Molar free energy change
0.5
3.5
4.5
8.5
Chemical potential
Fugacity
Both (A) and (B)
Neither (A) nor (B)
Minimum
Zero
Maximum
Indeterminate
Amount of energy transferred
Direction of energy transfer
Irreversible processes only
Non-cyclic processes only
Matter
Energy
Neither matter nor energy
Both matter and energy
0
∞
+ve
-ve