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
Specific heat of a gas for a reversible adiabatic process is
Isentropic process means a constant __________ process.
What is the ratio of adiabatic compressibility to isothermal compressibility ?
In the equation, PVn = Constant, if the value of n =then it represents a reversible __________ process.
At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is
While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is
In polytropic process (PVn = constant), if n =it means a/an __________ process.
The absolute entropy for all crystalline substances at absolute zero temperature is
Enthalpy of a gas depends upon its
The change in __________ is equal to the reversible work for compression in steady state flow process under isothermal condition.
Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system ?
Charles' law for gases states that
What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR(where, T1 and T2 are source & surrounding temperatures respectively.)?
For an isothermal reversible compression of an ideal gas
dW and dq are not the exact differential, because q and W are
Work done is a
The heat capacities for the ideal gas state depend upon the
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
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