In an ideal refrigeration cycle, the change in internal energy of the fluid is

A. +ve

B. -ve

C. 0

D. Either of the above three; depends on the nature of refrigerant

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

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  2. Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in…
  3. Gibbs free energy (F) is defined as
  4. During a reversible isothermal expansion of an ideal gas, the entropy change is
  5. The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial…
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  8. Claude's liquefaction process employs the cooling of gases by
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  10. In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________…
  11. __________ functions are exemplified by heat and work.
  12. Entropy of the system decreases, when
  13. Fugacity is most helpful in
  14. Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system…
  15. The equation, PV = nRT, is best obeyed by gases at
  16. Degrees of freedom at triple point will be
  17. Free energy change of mixing two liquid substances is a function of the
  18. The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while…
  19. Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.
  20. For a single component two phase mixture, the number of independent variable properties are
  21. The ammonia synthesis reaction represented by N2 + 3H2 2NH3; ΔH = - 22.4 kcal, is
  22. Pick out the wrong statement.
  23. As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then…
  24. Refrigeration capacity of a household refrigerator may be round about __________ tons.
  25. The principle applied in liquefaction of gases is
  26. Work done in case of free expansion is
  27. (∂H/∂T)P is the mathematical expression for
  28. A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The…
  29. Which of the following is an undesirable characteristic of a refrigerant?
  30. Pick out the correct statement: