Q. The number of degrees of freedom for an azeotropic mixture in a two component vapour-liquid equilibria is/are

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Q. Any substance above its critical temperature exists as

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Q. Which of the following decreases with increase in pressure ?

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Q. Isentropic process means a constant __________ process.

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Q. In case of steady flow compression polytropic process (PVⁿ = constant), the work done on air is the lowest, when

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Q. A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

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Q. For a real gas, the chemical potential is given by

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Q. At absolute zero temperature, all substances have the same

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Q. Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

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Q. Pick out the correct statement.

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Q. Grams of butane (C₄H₁₀) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be

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Q. The thermodynamic law, PVʸ = constant, is not applicable in case of

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Q. When a gas in a vessel expands, its internal energy decreases. The process involved is

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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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