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

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

A. Chemical potentials of a given component should be equal in all phases

B. Chemical potentials of all components should be same in a particular phase

C. Sum of the chemical potentials of any given component in all the phases should be the same

D. None of these

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

A. 0°C and 750 mm Hg

B. 15°C and 750 mm Hg

C. 0°C and 1 kgf/cm2

D. 15°C and 1 kgf/cm2

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Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.

A. Decreases

B. Increases

C. Remains constant

D. Decreases logarithmically

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Refrigerants commonly used for domestic refrigerators are

A. Ethyl chloride or methyl chloride

B. Freon-12

C. Propane

D. NH3 or CO2

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All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

A. CO₂

B. H₂

C. O₂

D. N₂

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For an exothermic reaction

A. Only enthalpy change (ΔH) is negative

B. Only internal energy change (ΔE) is negative

C. Both ΔH and ΔE are negative

D. Enthalpy change is zero

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Absolute zero temperature signifies the

A. Minimum temperature attainable

B. Temperature of the heat reservoir to which a Carnot engine rejects all the heat that is taken in

C. Temperature of the heat reservoir to which a Carnot engine rejects no heat

D. None of these

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A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

A. Δ S₁ is always < Δ S_R

B. Δ S₁ is sometimes > Δ S_R

C. Δ S₁ is always > Δ S_R

D. Δ S₁ is always = Δ S_R

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Specific __________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.).

A. Entropy

B. Internal energy

C. Enthalpy

D. Gibbs free energy

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For an incompressible fluid, the __________ is a function of both pressure as well as temperature.

A. Internal energy

B. Enthalpy

C. Entropy

D. All (A), (B) & (C)

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If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero

A. Enthalpy

B. Volume

C. Both 'a' & 'b'

D. Neither 'a' nor 'b'

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Isentropic process means a constant __________ process.

A. Enthalpy

B. Pressure

C. Entropy

D. None of these

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Which of the following is not an equation of state?

A. Bertholet equation

B. Clausius-Clapeyron equation

C. Beattie-Bridgeman equation

D. None of these

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The intensive properties are

A. Molar volume, density, viscosity and boiling point

B. Refractive index and surface tension

C. Both (A) and (B)

D. None of these

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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?

A. 2HI H₂ + I₂

B. N₂O₄ 2NO₂

C. 2SO₂ + O₂ 2SO₃

D. None of these

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The energy of activation of exothermic reaction is

A. Zero

B. Negative

C. Very large compared to that for endothermic reaction

D. Not possible to predict

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

A. Oxygen

B. Nitrogen

C. Air

D. Hydrogen

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As the time is passing, entropy of the universe

A. Is increasing

B. Is decreasing

C. Remain constant

D. Data insufficient, can't be predicted

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A domestic refrigerator has a/an __________ cooled condenser.

A. Water

B. Air

C. Evaporative

D. 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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Pick out the wrong statement.

A. Trouton's ratio of non-polar liquids is calculated using Kistyakowsky equation

B. Thermal efficiency of a Carnot engine is always less than 1

C. An equation relating pressure, volume and temperature of a gas is called ideal gas equation

D. None of these

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For a spontaneous process, free energy

A. Is zero

B. Increases

C. Decreases whereas the entropy increases

D. And entropy both decrease

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The equilibrium constant for a chemical reaction at two different temperatures is given by

A. Kp₂/Kp₁ = - (ΔH/R) (1/T₂ - 1/T₁)

B. Kp₂/Kp₁ = (ΔH/R) (1/T₂ - 1/T₁)

C. Kp₂/Kp₁ = ΔH (1/T₂ - 1/T₁)

D. Kp₂/Kp₁ = - (1/R) (1/T₂ - 1/T₁)

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Ideal gas law is applicable at

A. Low T, low P

B. High T, high P

C. Low T, high P

D. High T, low P

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Enthalpy of a gas depends upon its

A. Temperature

B. Mass

C. Volume

D. Pressure

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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.

A. Bomb

B. Separating

C. Bucket

D. Throttling

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Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is

A. Positive

B. Negative

C. Zero

D. Infinity

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Co-efficient of Performance (COP) of a refrigerator is the ratio of the

A. Work required to refrigeration obtained

B. Refrigeration obtained to the work required

C. Lower to higher temperature

D. Higher to lower temperature

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

A. 0

B. 1

C. 2

D. 3

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__________ explains the equilibrium constant for any chemical reaction.

A. Henry's law

B. Law of mass action

C. Hess's law

D. None of these

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C_p - C_v = R is valid for __________ gases.

A. Ideal

B. Very high pressure

C. Very low temperature

D. All of the above

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Accepted Answer

A. Chemical potentials of a given component should be equal in all phases

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

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

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

Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.

Refrigerants commonly used for domestic refrigerators are

All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

For an exothermic reaction

Absolute zero temperature signifies the

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

Specific __________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.).

For an incompressible fluid, the __________ is a function of both pressure as well as temperature.

If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero

Isentropic process means a constant __________ process.

Which of the following is not an equation of state?

The intensive properties are

In which of the following reaction equilibrium, the value of equilibrium constant K_p will be more than is K_c?

The energy of activation of exothermic reaction is

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

As the time is passing, entropy of the universe

A domestic refrigerator has a/an __________ cooled condenser.

A gas shows deviation from ideal behaviour at

Pick out the wrong statement.

For a spontaneous process, free energy

The equilibrium constant for a chemical reaction at two different temperatures is given by

Ideal gas law is applicable at

Enthalpy of a gas depends upon its

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.

Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is

Co-efficient of Performance (COP) of a refrigerator is the ratio of the

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

__________ explains the equilibrium constant for any chemical reaction.

C_p - C_v = R is valid for __________ gases.

Also checkout

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

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

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

Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.

Refrigerants commonly used for domestic refrigerators are

All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

For an exothermic reaction

Absolute zero temperature signifies the

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively)

Specific __________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.).

For an incompressible fluid, the __________ is a function of both pressure as well as temperature.

If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero

Isentropic process means a constant __________ process.

Which of the following is not an equation of state?

The intensive properties are

In which of the following reaction equilibrium, the value of equilibrium constant Kp will be more than is Kc?

The energy of activation of exothermic reaction is

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

As the time is passing, entropy of the universe

A domestic refrigerator has a/an __________ cooled condenser.

A gas shows deviation from ideal behaviour at

Pick out the wrong statement.

For a spontaneous process, free energy

The equilibrium constant for a chemical reaction at two different temperatures is given by

Ideal gas law is applicable at

Enthalpy of a gas depends upon its

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.

Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is

Co-efficient of Performance (COP) of a refrigerator is the ratio of the

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

__________ explains the equilibrium constant for any chemical reaction.

Cp - Cv = R is valid for __________ gases.

Also checkout

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

In which of the following reaction equilibrium, the value of equilibrium constant K_p will be more than is K_c?

C_p - C_v = R is valid for __________ gases.