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For an ideal gas, the activity co-efficient is

A. Directly proportional to pressure

B. Inversely proportional to pressure

C. Unity at all pressures

D. None of these

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

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  1. Enthalpy of a gas depends upon its
  2. A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown…
  3. For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist…
  4. If two gases have same reduced temperature and reduced pressure, then they will have the same
  5. For an ideal gas, the activity co-efficient is
  6. In a homogeneous solution, the fugacity of a component depends upon the
  7. The second law of thermodynamics states that
  8. The necessary and sufficient condition for equilibrium between two phases is
  9. In an ideal refrigeration cycle, the change in internal energy of the fluid is
  10. (1/V) (∂V/∂T)P is the mathematical expression
  11. __________ Equation predicts the activity coefficient from experimental data.
  12. Which of the following is not an intensive property?
  13. Which of the following is not an intensive property?
  14. As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T)…
  15. As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then…
  16. For an incompressible fluid, the __________ is a function of both pressure as well as temperature.
  17. If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________…
  18. What is the degree of freedom for a system comprising liquid water equilibrium with its vapour?
  19. Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal…
  20. Isobaric process means a constant process.
  21. Lenz's law results from the law of conservation of
  22. Extensive properties of a thermodynamic system depend upon the __________ of the system.
  23. Which of the following liquid metals has the highest thermal conductivity?
  24. Which of the following exemplifies an adiabatic process?
  25. For the reversible exothermic reaction, N2 + 3H2 2NH3, increase of pressure would
  26. The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction…
  27. Reduced pressure of a gas is the ratio of its
  28. Ideal refrigeration cycle is
  29. In the reaction; N2 + O2 2NO, increasing the pressure will result in
  30. For an ideal solution, the value of activity co-efficient is