Q. The molar excess Gibbs free energy, gᴱ, for a binary liquid mixture at T and P is given by, (gᴱ/RT) = A . x₁. x₂, where A is a constant. The corresponding equation for ln y₁, where y₁ is the activity co-efficient of component 1, is

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Q. The adiabatic throttling process of a perfect gas is one of constant enthalpy

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Q. For spontaneous changes in an isolated system (S = entropy)

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Q. The second law of thermodynamics states that

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Q. Internal energy of an ideal gas

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Q. A refrigerator works on the principle of __________ law of thermodynamics.

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Q. Pick out the wrong statement.

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Q. Pick out the wrong statement.

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Q. Choose the condition that must be specified in order to liquify CO₂ (triple point for CO₂ is - 57°C and 5.2 atm).

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Q. If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

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Q. One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is

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Q. Lenz's law results from the law of conservation of

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Q. Degree of freedom of the system ice-water-vapour will be

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Q. A system in which there is exchange of energy but not of mass, is called a/an __________ system.

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Q. The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point.

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Q. In an ideal gas mixture, fugacity of a species is equal to its

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Q. Which of the following is true for Virial equation of state ?

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Q. Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole . °K

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Q. A gas can be liquified by pressure alone only, when its temperature is __________ its critical temperature.

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Q. Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the

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