Q. Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass?

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Q. A/an __________ system is exemplified by a vessel containing a volatile liquid in contact with its vapor.

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Q. In a P-V diagram (for an ideal gas), an isothermal curve will coincide withan adiabatic curve (through a point), when

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Q. For an ideal gas, the chemical potential is given by

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Q. Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be

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Q. In the ammonia synthesis reaction, N₂ + 3H₂ ↔ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

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Q. When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is

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Q. COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about

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Q. The number of degrees of freedom for a mixture of ice and water (liquid) are

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Q. On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will

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Q. Domestic refrigerator usually works on the __________ refrigeration cycle.

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Q. Gibbs-Duhem equation

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Q. Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

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Q. The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant Cᵥ), depends upon its

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Q. "When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs". This phenomenon is related to the

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Q. The internal energy of an ideal gas does not change in a reversible __________ process.

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Q. The expression for entropy change given by, ΔS = - nR ln (P₂/P₁), holds good for

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Q. With increase in temperature, the internal energy of a substance

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Q. It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions.

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Q. For a constant pressure reversible process, the enthalpy change (ΔH) of the system is

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