In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about __________ percent.
Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.
Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas )
In an adiabatic process, the
For a single component two phase mixture, the number of independent variable properties are
Entropy of the system decreases, when
Which of the following will increase the volume of a real gas by four times ?
Which of the following is not a unit of the equilibrium constant Kp? (where, Δx = number of moles of products number of moles of reactants)
The free energy change for a chemical reaction is given by (where, K = equilibrium constant)
Equation which relates pressure, volume and temperature of a gas is called the
A nozzle is a device, which
__________ law of thermodynamics ascertains the direction of a particular spontaneous process.
Extensive properties of a thermodynamic system depend upon the __________ of the system.
Pick out the wrong statement.
Pick out the correct statement.
Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.
Claussius-Clayperon equation gives accurate result, when the
The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called __________ temperature.
Duringthe phase transition, __________ changes.
At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.
The equation Tds = dE - PdV applies to
The equation, PV = nRT, is best obeyed by gases at
Partial molal quantities are important in the study of
What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor ?
The expression for entropy change, ΔS = n Cp . ln (T2/T1), is valid for the __________ of a substance.
The work done in an adiabatic change in a particular gas depends upon changes in the __________ only.
For an ideal solution, the value of activity co-efficient is
If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero.
Internal energy of an element at 1 atm andC is __________ kcal/kg.mole.
Number of degrees of freedom for a three phase system in equilibrium comprising of three non-reacting chemical species is
The value of gas constant 'R' is
The expression, nCv(T2 - T1), is for the __________ of an ideal gas.
The number of degrees of freedom at the triple point of water is
In an irreversible process
The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the __________ temperature.
Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which
Generation of heat by friction is an example of a/an __________ change.
In an ideal refrigeration cycle, the change in internal energy of the fluid is
Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)?
Which of the following liquid metals has the highest thermal conductivity ?
What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope ?
The value of Joule-Thomson co-efficient, in case where cooling occurs after the throttling process is
If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will
Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as
__________ equation predicts the activity co-efficient from experimental data.
A domestic refrigerator has a/an __________ cooled condenser.
For an irreversible process involving only pressure-volume work
Free energy
Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.