### Related Questions

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# The heat capacities for the ideal gas state depend upon the

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# (∂E/∂T)_{V} is the mathematical expression for

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# Refrigeration cycle

A. Violates second law of thermodynamics

B. Involves transfer of heat from low temperature to high temperature

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

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# In vapour compression refrigeration system, if the evaporator temperature and the condenser temperatures are -13°C and 37°C respectively, the Carnot COP will be

D. Data insufficient, can't be found out

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# An ideal liquid refrigerant should

A. Not have a sub-atmospheric vapour pressure at the temperature in the refrigerator coils

B. Not have unduly high vapour pressure at the condenser temperature

D. Have low specific heat

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# On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)_{s} and the slope of the reversible isothermal line (∂P/ ∂V)_{T} are related as (where, y = C_{p}/C_{v})

A. (∂P/∂V)_{S} = (∂P/∂V)_{T}

B. (∂P/∂V)_{S} = [(∂P/∂V)_{T}]^{Y}

C. (∂P/∂V)_{S} = y(∂P/∂V)_{T}

D. (∂P/∂V)_{S} = 1/y(∂P/∂V)_{T}

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# For a cyclic process, a fixed ratio between heat and work

D. Is difficult to predict

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# Requisites of a reversible process is that the

A. System and surroundings pressure be equal

B. Friction in the system should be absent

C. System and surroundings temperature be equal

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

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# In case of an __________ process, the temperature of the system increases.

A. Isothermal compression

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# For a given substance at a specified temperature, activity is __________ to fugacity.

B. Inversely proportional

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# Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to __________ °C.

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# C_{v} for an ideal gas

A. Does not depend upon temperature

B. Is independent of pressure only

C. Is independent of volume only

D. Is independent of both pressure and volume

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# In which of the following reaction equilibrium, the value of equilibrium constant K_{p} will be more than is K_{c}?

C. 2SO_{2} + O_{2} 2SO_{3}

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# Number of phases in a colloidal system is:

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# An isentropic process is carried out at constant

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# Internal energy of an ideal gas

A. Increases with increase in pressure

B. Decreases with increase in temperature

C. Is independent of temperature

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# 4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

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# Which of the following equations is used for the prediction of activity co-efficient from experiments?

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# __________ increases with increase in pressure.

A. The melting point of wax

B. The boiling point of a liquid

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# Which is not constant for an ideal gas?

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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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# Gibbs free energy of mixing at constant pressure and temperature is always

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# Which of the following represents the Virial equation of state?

A. T = [RT/(V- b)] - [a/√T. V(V + b)]

B. PV/RT = 1 + (B/V) + (C/V^{2}) + ……

C. n_{1}u_{2} + μ_{2}μ_{1} = 0

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# What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor?

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# Solid and liquid phases of a substance are in equilibrium at the

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

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# A solute distributes itself between two nonmiscible solvents in contact with each other in such a way that, at a constant temperature, the ratio of its concentrations in two layers is constant, irrespective of its total amount. This is

B. Followed from Margules equation

C. A corollary of Henry's law

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# As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches