### Related Questions

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# In case of a close thermodynamic system, there is __________ across the boundaries.

A. No heat and mass transfer

B. No mass transfer but heat transfer

C. Mass and energy transfer

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# Trouton's ratio of __________ liquids is calculated using Kistyakowsky equation.

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# Which of the following diagrams does not represent an Otto cycle?

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# Standard temperature and pressure (S.T.P.) is

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# Fugacity is most helpful in

A. Representing actual behaviour of real gases

B. Representing actual behaviour of ideal gases

C. The study of chemical equilibria involving gases at atmospheric pressure

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# The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.

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# Gibbs-Duhem equation

A. States that n_{1}dμ_{1} + n_{2}dμ_{2} + ....n_{j}dμ_{j} = 0, for a system of definite composition at constant temperature and pressure

B. Applies only to binary systems

C. Finds no application in gas-liquid equilibria involved in distillation

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# The minimum number of phases that can exist in a system is

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# The unit of equilibrium constant of a chemical reaction is the same as that of

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# An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to

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# Gibbs-Helmholtz equation is

A. ΔF = ΔH + T [∂(ΔF)/∂T]P

D. dP/dT = ΔH_{vap}/T.ΔV_{vap}

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# Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the

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# A gas shows deviation from ideal behaviour at

A. Low pressure and high temperature

B. Low pressure and low temperature

C. Low temperature and high pressure

D. High temperature and high pressure

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# Compound having large heat of formation is

C. Not at all stable (like nascent O2)

D. Either more or less stable; depends on the compound

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# Pick out the wrong statement:

A. The expansion of a gas in vacuum is an irreversible process

B. An isometric process is a constant pressure process

C. Entropy change for a reversible adiabatic process is zero

D. Free energy change for a spontaneous process is negative

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# When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

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# The standard Gibbs free energy change of a reaction depends on the equilibrium

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# Work done is a

A. Property of the system

D. State description of a system

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

D. Increased or decreased COP; depending upon the type of refrigerant

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# C_{p} - C_{v} = R is valid for __________ gases.

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# With increase in pressure (above atmospheric pressure), the C_{p} of a gas

D. First decreases and then increases

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# In a homogeneous solution, the activity coefficient of a component depends upon the

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# Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.

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# Degrees of freedom at triple point will be

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# Enthalpy changes over a constant pressure path are always zero for __________ gas.

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# If atmospheric temperature and dew point are nearly equal, then the relative humidity is

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# The shape of T-S diagram for Carnot Cycle is a

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# The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)_{T} = T(∂P/∂T)_{H} - P. This equation is called the

B. Thermodynamic equation of state

D. Redlich-Kwong equation of state

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# The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances. This is the

B. Statement of Van't Hoff Equation

C. Le-Chatelier's principle

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# For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be