Internal energy is equal to the heat absorbed in case of a/an __________ process.
The equation, Cp - Cv = R, is true for __________ gas.
Gibbs free energy at constant pressure and temperature under equilibrium conditions is
Critical compressibility factor for all substances
Which of the following has the least thermal efficiency ?
The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is
Adiabatic compression of a saturated water vapour makes it
All gases above its inversion temperature, in a throttling process will show
The value of Cp & Cv respectively for monoatomic gases in Kcal/kg Mole . °K are
Enthalpy 'H' is defined as
The extensive properties are
Free energy change of mixing two liquid substances is a function of the
Ideal refrigeration cycle is
"If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them". This is __________ law.
For a given substance at a specified temperature, activity is __________ to fugacity.
A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then(where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively)
Specific volume of an ideal gas is
As the entropy of the universe is increasing, day by day, the work producing capacity of a heat engine is
The first law of thermodynamics is a restatement of the law of conservation of
In a homogeneous solution, the activity co-efficient of a component depends upon the
With increase in pressure (above atmospheric pressure), the Cp of a gas
What is the degree of freedom for two mis-cible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope ?
If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the
Joule-Thomson Co-efficient at any point on the inversion curve is
PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process.
Claude gas liquefaction process employs cooling
The specific heat of saturated water vapour at 100°C is
For a multicomponent system, the term chemical potential is equivalent to the
First law of thermodynamics is mathematically stated as
Pick out the wrong statement.
One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one
__________ functions are exemplified by heat and work.
An ideal liquid refrigerant should
The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law )
The total change in the enthalpy of a system is independent of the
The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.
The following heat engine produces power ofkW. The heat engine operates betweenK andK. It has a thermal efficiency equal toof that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is
Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.
Fugacity is a measure of the
The quantitative effect of temperature on chemical equilibrium is given by the
What is the value of Joule-Thomson co-efficient for an ideal gas ?
A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P1 and P2.(where, P1 and P2 are initial and final pressures respectively)
Pick out the extensive property out of the following.
An irreversible process
The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.
Joule-Thomson co-efficient for a perfect gas is
Pick out the wrong statement:
Which of the following is not affected by temperature changes ?
A change in state involving a decrease in entropy can be spontaneous, only if