Q.1
Van Laar equation deals with the activity co-efficients in
Q.2
What happens in a reversible adiabatic expansion process?
Q.3
Which of the following is affected by the temperature?
Q.4
The expression, ΔG = nRT .In P₂/P₁ , gives the free energy change
Q.5
The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x₁. x₂, where A is a constant. The corresponding equation for ln y₁, where y₁ is the activity co-efficient of component 1, is
Q.6
For a real gas, the chemical potential is given by
Q.7
The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the __________ equation.
Q.8
When dilute aqueous solutions of two salts are mixed, the process is associated with
Q.9
Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg . K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is
Q.10
One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is
Q.11
Entropy change for an irreversible process taking system and surrounding together is
Q.12
The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T₁ and T₂ is given by
Q.13
The standard state of a gas (at a given temperature) is the state in which fugacity is equal to
Q.14
For an ideal gas, the chemical potential is given by
Q.15

In the equation, PVn = constant, if the value of n =then it represents a reversible __________ process.

  • isothermal
  • isobaric
  • polytropic
  • adiabatic
Q.16

Steam undergoes isentropic expansion in a turbine fromkPa and 400°C (entropy = 6.kJ/kg K) tokPa) (entropy of saturated liquid = 1.kJ/kg . K, entropy of saturated vapour = 7.kJ/kg. K) The exit condition of steam is

  • superheated vapour.
  • partially condensed vapour with quality of 0.9.
  • saturated vapour.
  • partially condensed vapour with quality of 0.1.
Q.17

A cyclic engine exchanges heat with two reservoirs maintained atand 300°C respectively. The maximum work (in J) that can be obtained fromJ of heat extracted from the hot reservoir is

  • 349
  • 651
  • 667
  • 1000
Q.18

A cyclic engine exchanges heat with two reservoirs maintained atand 300°C respectively. The maximum work (in J) that can be obtained fromJ of heat extracted from the hot reservoir is

  • 349
  • 651
  • 667
  • 1000
Q.19

In the equation, PVn = Constant, if the value of n =then it represents a reversible __________ process.

  • isobaric
  • isothermal
  • isentropic
  • isometric
Q.20

In the equation, PVn = Constant, if the value of n =then it represents a reversible __________ process.

  • isobaric
  • isothermal
  • isentropic
  • isometric
Q.21

A cyclic engine exchanges heat with two reservoirs maintained atand 300°C respectively. The maximum work (in J) that can be obtained fromJ of heat extracted from the hot reservoir is

  • 349
  • 651
  • 667
  • 1000
0 h : 0 m : 1 s