In any spontaneous process, the __________ free energy decreases.
Helmholtz
Gibbs
Both a & b
Neither 'a' nor 'b'
- Refrigeration capacity of a household refrigerator may be round about __________ tons.
- Gibbs free energy at constant pressure and temperature under equilibrium conditions is
- For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist…
- The expression for the work done for a reversible polytropic process can be used to obtain the expression…
- The expression, nCv(T2 - T1), is for the __________ of an ideal gas.
- The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called…
- Heat pump
- If we increase the pressure on a substance (which is at its triple point), then the triple point
- Reduced pressure of a gas is the ratio of its
- Joule-Thomson co-efficient is defined as
- Gibbs free energy per mole for a pure substance is equal to the
- The necessary condition for phase equilibrium in a multiphase system of N components is that the
- In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible…
- Which of the following has the least thermal efficiency?
- Which of the following has the minimum value of COP for a given refrigeration effect?
- Which of the following diagrams does not represent an Otto cycle?
- The standard Gibbs free energy change of a reaction depends on the equilibrium
- The internal energy of an incompressible fluid depends upon its
- y = specific heat ratio of an ideal gas is equal to
- All gases except __________ shows a cooling effect during throttling process at atmospheric temperature…
- Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg…
- The heat capacities for the ideal gas state depend upon the
- It is desired to bring about a certain change in the state of a system by performing work on the system…
- A/an __________ system is exemplified by a vessel containing a volatile liquid in contact with its vapor.
- Pick out the undesirable property for a good refrigerant.
- When liquid and vapour phases of one component system are in equilibrium (at a given temperature and…
- Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature…
- Entropy change for an irreversible isolated system is
- For a reversible process involving only pressure-volume work
- Which of the following processes cannot be made reversible even under ideal condition of operation?