Q. A system is said to be isopiestic, if there is no __________ change.

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Q. In a turbine, the fluid expands almost

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Q. The unity of Planck's constant 'h' in the equation, E = hv is

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Q. Specific/molar Gibbs free energy for a pure substance does not change during

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Q. What is the value of ln y (where y = activity co-efficient) for ideal gases ?

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Q. A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system

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Q. Which is not a refrigerant ?

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Q. The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

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Q. Heat is added at constant pressure in an ideal __________ cycle.

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Q. Mollier diagram is a plot of

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Q. The activity of an ideal gas is numerically __________ its pressure.

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Q. Specific heat of a gas for a reversible adiabatic process is

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Q. When pressure is applied on the system, ice ↔ water, then

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Q. Partial molar free energy of an element A in solution is same as its

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Q. Free energy change at equilibrium is

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Q. Heat pump

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Q. The temperature at which both liquid and gas phases are identical, is called the __________ point.

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Q. The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.

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Q. Co-efficient of Performance (COP) of a refrigerator is the ratio of the

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Q. A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kg⁻¹. K⁻¹. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kg⁻¹ , K⁻¹ is

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