Home

The acentric factor of a materical, 'ω', is defined as ω = -log10(Prsat)Tr-1 = 0.7, where, Prsat = reduced vapor pressure, Tr = reduced temperature. The value of acentric factor is always

A. > 2

B. < 1

C. > 1

D. < 3

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

You can do it
  1. A system in which there is exchange of energy but not of mass, is called a/an __________ system.
  2. In case of an __________ process, the temperature of the system increases.
  3. All gases above its inversion temperature, in a throttling process will show
  4. Activity co-efficient is a measure of the
  5. Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg…
  6. Compressibility factor of a gas is
  7. The relation connecting the fugacities of various components in a solution with one another and to composition…
  8. Pick out the correct statement.
  9. The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________…
  10. A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________…
  11. Which of the following is not correct for a reversible adiabatic process?
  12. Entropy change for an irreversible isolated system is
  13. In jet refrigerators, the refrigerating fluid is practically always
  14. Gibbs free energy (F) is defined as
  15. Which of the following is a widely used refrigerant in vapour compression refrigeration system (using…
  16. Which of the following has the least thermal efficiency?
  17. The co-efficient of performance (COP) of a refrigerating system, which is its index of performance,…
  18. Specific __________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.).
  19. With increase in temperature, the atomic heat capacities of all solid elements
  20. For an incompressible fluid, the __________ is a function of both pressure as well as temperature.
  21. The heat capacities for the ideal gas state depend upon the
  22. Gibbs-Helmholtz equation is
  23. Which of the following is affected by the temperature?
  24. Requisites of a reversible process is that the
  25. A system is said to be isopiestic, if there is no __________ change.
  26. If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical,…
  27. Extensive properties of a thermodynamic system depend upon the __________ of the system.
  28. As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then…
  29. Dry ice is
  30. For an ideal gas, the activity co-efficient is