The minimum number of phases that can exist in a system is

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1. Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity…
2. The change in Gibbs free energy for vaporisation of a pure substance is
3. Number of phases in a colloidal system is:
4. An isentropic process is carried out at constant
5. Which of the following will increase the volume of a real gas by four times?
6. It is desired to bring about a certain change in the state of a system by performing work on the system…
7. If atmospheric temperature and dew point are nearly equal, then the relative humidity is
8. A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially…
9. Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of…
10. For a spontaneous process, free energy
11. For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the __________…
12. Variation of equilibrium pressure with temperature for any two phases of a given substances is given…
13. Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the
14. Specific heat of a gas for a reversible adiabatic process is
15. Pick out the wrong statement.
16. Pick out the wrong statement.
17. Which of the following is an extensive property of a system?
18. The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant…
19. A reasonably general expression for vapourliquid phase equilibrium at low to moderate pressure is φi…
20. Pick out the correct statement.
21. Chemical potential of ith component of a system is given by
22. The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while…
23. When liquid and vapour phases of one component system are in equilibrium (at a given temperature and…
24. Equation which relates pressure, volume and temperature of a gas is called the
25. One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought…
26. For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions,…
27. Pick out the wrong statement.
28. Degree of freedom of a system consisting of a gaseous mixture of H2 and NH3 will be
29. For spontaneous changes in an isolated system (S = entropy)
30. Which of the following is not an equation of state?

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