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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Q. Degree of freedom of a system consisting of a gaseous mixture of H₂ and NH₃ will be

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Q. Pick out the wrong statement.

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Q. Fugacity co-efficient of a substance is the ratio of its fugacity to

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Q. Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates

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Q. Which of the following is not an intensive property ?

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Q. Pick out the wrong statement.

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Q. Gibbs phase rule finds application, when heat transfer occurs by

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Q. Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

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