+ve

-ve

0

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

**When a gas is expanded from high pressure region to low pressure region; temperature change occurs.…****Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in…****Gibbs free energy (F) is defined as****During a reversible isothermal expansion of an ideal gas, the entropy change is****The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial…****For organic compounds, group contribution method can be used for the estimation of****For a multi-component system, the term chemical potential is equivalent to the****Claude's liquefaction process employs the cooling of gases by****In case of the decomposition of hydroiodic acid (2HI H2 + I2), addition of H2 (at equilibrium condition)…****In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________…****__________ functions are exemplified by heat and work.****Entropy of the system decreases, when****Fugacity is most helpful in****Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system…****The equation, PV = nRT, is best obeyed by gases at****Degrees of freedom at triple point will be****Free energy change of mixing two liquid substances is a function of the****The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while…****Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.****For a single component two phase mixture, the number of independent variable properties are****The ammonia synthesis reaction represented by N2 + 3H2 2NH3; ΔH = - 22.4 kcal, is****Pick out the wrong statement.****As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then…****Refrigeration capacity of a household refrigerator may be round about __________ tons.****The principle applied in liquefaction of gases is****Work done in case of free expansion is****(∂H/∂T)P is the mathematical expression for****A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The…****Which of the following is an undesirable characteristic of a refrigerant?****Pick out the correct statement:**