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  1. Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal…
  2. Pick out the wrong statement.
  3. A gas can be liquefied by pressure alone only, when its temperature is __________ its critical temperature.
  4. Which of the following is not an intensive property?
  5. A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown…
  6. In an ideal refrigeration cycle, the change in internal energy of the fluid is
  7. An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas…
  8. When pressure is applied on the system, ice ↔ water, then
  9. For an ideal gas, the activity co-efficient is
  10. Specific __________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.).
  11. What is the ratio of adiabatic compressibility to isothermal compressibility?
  12. At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.
  13. For a stable phase at constant pressure and temperature, the fugacity of each component in a binary…
  14. Gibbs-Helmholtz equation is
  15. The equation Tds = dE - PdV applies to
  16. The expression, nRT ln(P1/P2), is for the __________of an ideal gas.
  17. A gas has a volume of 27.3 c.c. at 0°C. Its volume at 10°C (if pressure remains unchanged) will…
  18. High __________ is an undesirable property for a good refrigerant.
  19. For any system, what is the minimum number of degrees of freedom?
  20. Enthalpy changes over a constant pressure path are always zero for __________ gas.
  21. The adiabatic throttling process of a perfect gas is one of constant enthalpy
  22. Which of the following units is not present in both the vapor compression refrigeration system and absorption…
  23. Rotary lime kiln is an example of a/an __________ system.
  24. The unit of fugacity is the same as that of the
  25. A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it…
  26. Internal energy change of a system over one complete cycle in a cyclic process is
  27. Which of the following behaves most closely like an ideal gas?
  28. At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.
  29. Number of phases in a colloidal system is:
  30. Which of the following is not a reversible process?