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Third law of thermodynamics is concerned with the

A. Value of absolute entropy

B. Energy transfer

C. Direction of energy transfer

D. None of these

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

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  1. Specific/molar Gibbs free energy for a pure substance does not change during
  2. The expression for entropy change given by, ΔS = - nR ln (P2/P1), holds good for
  3. Refrigeration capacity of a household refrigerator may be round about __________ tons.
  4. The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT)…
  5. Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system…
  6. While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the…
  7. During Joule-Thomson expansion of gases
  8. 4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is
  9. If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial…
  10. The number of degrees of freedom for an azeotropic mixture in a two component vapour-liquid equilibria…
  11. The kinetic energy of gas molecule is zero at
  12. At absolute zero temperature, the __________ of the gas is zero.
  13. For equilibrium process (i.e. reversible) in an isolated system
  14. Trouton's ratio of __________ liquids is calculated using Kistyakowsky equation.
  15. Activity co-efficient is a measure of the
  16. The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.
  17. Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid…
  18. Critical solution temperature (or the consolute temperature) for partially miscible liquids (e.g., phenol-water)…
  19. Pick out the correct statement.
  20. Efficiency of a Carnot engine working between temperatures T1 and T2 (T1 < T) is
  21. Melting of ice is an example of an __________ process.
  22. Which of the following is a widely used refrigerant in vapour compression refrigeration system (using…
  23. Enthalpy changes over a constant pressure path are always zero for __________ gas.
  24. Those solutions in which there is no volume change upon mixing the components in the liquid state and…
  25. In a homogeneous solution, the fugacity of a component depends upon the
  26. Critical temperature is defined as the temperature above which a gas will
  27. Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.
  28. For an isothermal reversible compression of an ideal gas
  29. For a constant pressure reversible process, the enthalpy change (ΔH) of the system is
  30. Which of the following represents the Virial equation of state?