Q. 4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

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Q. Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas law) for all gases are

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Q. Which of the following is not correct for a reversible adiabatic process ?

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Q. The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

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Q. Throttling (Joule-Thomson effect) process is a constant __________ process.

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Q. For the reversible exothermic reaction, N₂ + 3H₂ ↔ 2NH₃, increase of pressure would

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Q. Which of the following has the minimum value of COP for a given refrigeration effect?

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Q. __________ decreases during adiabatic throttling of a perfect gas.

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Q. Pick out the wrong statement.

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Q. Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

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Q. Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the

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Q. Clausius - Clayperon equation is applicable to __________ equilibrium processes.

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Q. In which of the following reaction equilibria, the value of equilibrium constant Kp will be more than is Kc ?

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Q. After throttling, gas temperature

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Q. The chemical potential for a pure substance is __________ its partial molal free energy.

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Q. Entropy change in case of reversible adiabatic process is

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Q. In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is

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Q. For multicomponent multiple phases to be in equilibrium at the same pressure and temperature, the __________ of each component must be same in all phases.

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Q. The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be

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Q. Mollier chart is a __________ plot.

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