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Enthalpy changes over a constant pressure path are always zero for __________ gas.

A. Any

B. A perfect

C. An easily liquefiable

D. A real

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

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  1. Pick out the wrong statement:
  2. Law of corresponding states says that
  3. __________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very…
  4. Ideal gas law is applicable at
  5. For a single component two phase mixture, the number of independent variable properties are
  6. Fugacity and pressure are numerically equal, when the gas is
  7. Absorption/evolution of heat during conversion of a substance from one allotropic form to another is…
  8. PVy = constant, holds good for an isentropic process, which is
  9. Refrigeration capacity of a household refrigerator may be round about __________ tons.
  10. The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing…
  11. Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system…
  12. At the critical point of a substance
  13. At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero.…
  14. Which of the following equations is used for the prediction of activity co-efficient from experiments?
  15. Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the
  16. Entropy change for an irreversible process taking system and surrounding together is
  17. For the reversible exothermic reaction, N2 + 3H2 2NH3, increase of pressure would
  18. An irreversible process
  19. For an isothermal reversible compression of an ideal gas
  20. The third law of thermodynamics states that the
  21. Heat pump
  22. The energy of activation of exothermic reaction is
  23. A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it…
  24. If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial…
  25. The principle applied in liquefaction of gases is
  26. Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid…
  27. Forward reaction will be favoured for the exothermic reaction, represented by CO + H2O CO2 + H2, by
  28. The gas law (PV = RT) is true for an __________ change.
  29. A system in which there is exchange of energy but not of mass, is called a/an __________ system.
  30. Consider the process A & B shown in the figure given below: In this case, it is possible that