Q. The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by

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Q. Melting of ice is an example of an __________ process.

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Q. Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of mixture __________ calorimeter is not used for measuring the dryness fraction of steam.

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Q. As the time is passing, entropy of the universe

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Q. Which of the following processes can not be made reversible even under ideal condition of operation?

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Q. The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the __________ equation.

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Q. Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg . K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is

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Q. An isentropic process is carried out at constant

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Q. All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.

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Q. High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:

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Q. The necessary condition for phase equilibrium in a multiphase system of N components is that the

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Q. The work done in isothermal compression compared to that in adiabatic compression will be

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Q. For organic compounds, group contribution method can be used for the estimation of

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Q. Specific __________ does not change during phase change at constant temperature and pressure.

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Q. When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

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Q. In the equation PVⁿ = constant, if the value of n = y = Cᵨ/Cᵥ, then it represents a reversible __________ process.

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Q. The ammonia synthesis reaction represented by N₂ + 3H₂ ↔ 2NH₃ ; ΔH = - 22.4 kcal, is

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Q. With increase in temperature, the atomic heat capacities of all solid elements

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Q. The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

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Q. The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is

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