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

Question

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

A. Entropy

B. Gibbs energy

C. Internal energy

D. Enthalpy

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Specific heat of a gas for a reversible adiabatic process is

A. Negative

B. Zero

C. Infinity

D. None of these

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After throttling, gas temperature

A. Decreases

B. Increases

C. Remain same

D. May increase or decrease; depends on the nature of the gas

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Melting of ice is an example of an __________ process.

A. Adiabatic

B. Isothermal

C. Isometric

D. None of these

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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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Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.

A. Infinity

B. Minus infinity

C. Zero

D. None of these

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Third law of thermodynamics is concerned with the

A. Value of absolute entropy

B. Energy transfer

C. Direction of energy transfer

D. None of these

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While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is

A. Infinity

B. Unity

C. Constant

D. Negative

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Boiling of liquid is accompanied with increase in the

A. Vapor pressure

B. Specific Gibbs free energy

C. Specific entropy

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

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The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while freezing.

A. Contracts

B. Expands

C. Does not change in volume

D. Either (A), (B) or (C)

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Enthalpy 'H' is defined as

A. H = E - PV

B. H = F - TS

C. H - E = PV

D. None of these

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The internal energy of an ideal gas does not change in a reversible __________ process.

A. Isothermal

B. Adiabatic

C. Isobaric

D. Isometric

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The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be

A. More

B. Less

C. Same

D. Data insufficient to predict

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The internal energy of an ideal gas is a function of its __________ only.

A. Molecular size

B. Volume

C. Pressure

D. Temperature

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An isentropic process is carried out at constant

A. Volume

B. Pressure

C. Temperature

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

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Claude gas liquefaction process employs cooling

A. At constant pressure

B. By throttling

C. By expansion in an engine

D. None of these

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Activity co-efficient is a measure of the

A. Departure from ideal solution behaviour

B. Departure of gas phase from ideal gas law

C. Vapour pressure of liquid

D. None of these

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An ideal monatomic gas is taken round the cycle ABCDA as shown below in the P-V diagram. The work done during the cycle is

A. PV

B. 2PV

C. PV/2

D. 0

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Law of corresponding states says that

A. Two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same

B. The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature

C. No gas can be liquefied above the critical temperature, howsoever high the pressure may be.

D. The molar heat of energy of gas at constant volume should be nearly constant (about 3 calories)

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Chemical potential of ith component of a system is given by

A. μ_i = (∂F/∂n_i)_{T, P, ni}

B. μ_i = (∂A/∂n_i)_{T, P, ni}

C. μ_i = (∂F/∂n_i)_{T, P}

D. μ_i = (∂A/∂n_i)_{T, P}

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Which of the following is not an intensive property?

A. Chemical potential

B. Surface tension

C. Heat capacity

D. None of these

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Pick out the wrong statement.

A. Activity co-efficient is dimensionless.

B. In case of an ideal gas, the fugacity is equal to its pressure.

C. In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component.

D. The fugacity co-efficient is zero for an ideal gas

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Critical temperature is defined as the temperature above which a gas will

A. Not liquify (barring exceptions)

B. Immediately liquify

C. Never liquify however high the pressure may be

D. None of these

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The necessary and sufficient condition for equilibrium between two phases is

A. The concentration of each component should be same in the two phases

B. The temperature of each phase should be same

C. The pressure should be same in the two phases

D. The chemical potential of each component should be same in the two phases

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Heat is added at constant temperature in an ideal __________ cycle.

A. Stirling

B. Brayton

C. Rankine

D. None of these

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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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There is a change in __________ during the phase transition.

A. Volume

B. Pressure

C. Temperature

D. All a, b & c

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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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Clausius-Clapeyron equation is applicable to __________ equilibrium processes.

A. Solid-vapor

B. Solid-liquid

C. Liquid-vapor

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

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

A. Molar concentration

B. Temperature

C. Internal energy

D. None of these

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In the reaction, represented by, 2SO₂ + O₂ 2SO₃; ΔH = - 42 kcal; the forward reaction will be favoured by

A. Low temperature

B. High pressure

C. Both (A) and (B)

D. Neither (A) nor (B)

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Accepted Answer

B. Gibbs energy

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

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Specific heat of a gas for a reversible adiabatic process is

After throttling, gas temperature

Melting of ice is an example of an __________ process.

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.

Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.

Third law of thermodynamics is concerned with the

While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is

Boiling of liquid is accompanied with increase in the

The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while freezing.

Enthalpy 'H' is defined as

The internal energy of an ideal gas does not change in a reversible __________ process.

The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be

The internal energy of an ideal gas is a function of its __________ only.

An isentropic process is carried out at constant

Claude gas liquefaction process employs cooling

Activity co-efficient is a measure of the

An ideal monatomic gas is taken round the cycle ABCDA as shown below in the P-V diagram. The work done during the cycle is

Law of corresponding states says that

Chemical potential of ith component of a system is given by

Which of the following is not an intensive property?

Pick out the wrong statement.

Critical temperature is defined as the temperature above which a gas will

The necessary and sufficient condition for equilibrium between two phases is

Heat is added at constant temperature in an ideal __________ cycle.

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

There is a change in __________ during the phase transition.

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

Clausius-Clapeyron equation is applicable to __________ equilibrium processes.

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

In the reaction, represented by, 2SO₂ + O₂ 2SO₃; ΔH = - 42 kcal; the forward reaction will be favoured by

Also checkout

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

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Specific heat of a gas for a reversible adiabatic process is

After throttling, gas temperature

Melting of ice is an example of an __________ process.

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.

Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.

Third law of thermodynamics is concerned with the

While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is

Boiling of liquid is accompanied with increase in the

The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while freezing.

Enthalpy 'H' is defined as

The internal energy of an ideal gas does not change in a reversible __________ process.

The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be

The internal energy of an ideal gas is a function of its __________ only.

An isentropic process is carried out at constant

Claude gas liquefaction process employs cooling

Activity co-efficient is a measure of the

An ideal monatomic gas is taken round the cycle ABCDA as shown below in the P-V diagram. The work done during the cycle is

Law of corresponding states says that

Chemical potential of ith component of a system is given by

Which of the following is not an intensive property?

Pick out the wrong statement.

Critical temperature is defined as the temperature above which a gas will

The necessary and sufficient condition for equilibrium between two phases is

Heat is added at constant temperature in an ideal __________ cycle.

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

There is a change in __________ during the phase transition.

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

Clausius-Clapeyron equation is applicable to __________ equilibrium processes.

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

In the reaction, represented by, 2SO2 + O2 2SO3; ΔH = - 42 kcal; the forward reaction will be favoured by

Also checkout

In the reaction, represented by, 2SO₂ + O₂ 2SO₃; ΔH = - 42 kcal; the forward reaction will be favoured by