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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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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