Pick out the correct statement.

A. Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero

B. Melting of ice involves increase in enthalpy and a decrease in randomness

C. The internal energy of an ideal gas depends only on its pressure

D. Maximum work is done under reversible conditions

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal…
  2. Which of the following units is not present in both the vapor compression refrigeration system and absorption…
  3. The activity of an ideal gas is numerically __________ its pressure.
  4. Gibbs-Duhem equation
  5. At absolute zero temperature, the __________ of the gas is zero.
  6. Which of the following is Virial equation of state?
  7. Number of degrees of freedom for a three phase system in equilibrium comprising of three nonreacting…
  8. For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the __________…
  9. Third law of thermodynamics is concerned with the
  10. In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process.
  11. When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the…
  12. Which of the following is not a common refrigerant?
  13. As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches
  14. In the ammonia synthesis reaction, N2 + 3H2 2NH3 + 22.4 kcal, the formation of NH3 will be favoured…
  15. Boiling of liquid is accompanied with increase in the
  16. High __________ is an undesirable property for a good refrigerant.
  17. Which one is true for a throttling process?
  18. Standard temperature and pressure (S.T.P.) is
  19. The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT)…
  20. Cv is given by
  21. Fugacity co-efficient of a substance is the ratio of its fugacity to
  22. The temperature at the eutectic point of the system is the __________ temperature that can be attained…
  23. All gases except __________ shows a cooling effect during throttling process at atmospheric temperature…
  24. In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible…
  25. Trouton's ratio of __________ liquids is calculated using Kistyakowsky equation.
  26. Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal…
  27. For spontaneous changes in an isolated system (S = entropy)
  28. Co-efficient of Performance (COP) of a refrigerator is the ratio of the
  29. The intensive properties are
  30. Isobaric process means a constant process.