41. In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in
42. Melting of ice is an example of an __________ process.
43. Claude's liquefaction process employs the cooling of gases by
44. A domestic refrigerator has a/an __________ cooled condenser.
45. Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is
46. At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.
47. PVy = constant, holds good for an isentropic process, which is
48. The internal energy of an ideal gas is a function of its __________ only.
49. Gibbs free energy at constant pressure and temperature under equilibrium conditions is
50. Free energy change at equilibrium is
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