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

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

A. Any

B. A perfect

C. An easily liquefiable

D. A real

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A system is said to be at equilibrium, if the entropy of the system has reached __________ value.

A. Minimum

B. Zero

C. Maximum

D. None of these

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A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is

A. 349

B. 651

C. 667

D. 1000

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Compressibility factor for almost all the gases are approximately same at the same

A. Pressure and temperature

B. Reduced pressure and reduced temperature

C. Critical pressure and critical temperature

D. None of these

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

A. 1st

B. Zeroth

C. 3rd

D. None of these

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For spontaneous changes in an isolated system (S = entropy)

A. ds = 0

B. ds <0

C. ds > 0

D. ds = Constant

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The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

A. Less than

B. More than

C. Same as

D. Not related to

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When a gas is expanded from high pressure region to low pressure region; temperature change occurs. This phenomenon is related to the

A. Gibbs-Duhem equation

B. Gibbs-Helmholtz equation

C. Third law of thermodynamics

D. Joule-Thomson effect

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For an isothermal process, the internal energy of a gas

A. Increases

B. Decreases

C. Remains unchanged

D. Data insufficient, can't be predicted

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In case of the decomposition of hydroiodic acid (2HI H₂ + I₂), addition of H₂ (at equilibrium condition) will

A. Increase the partial pressure of I₂

B. Decrease the partial pressure of HI

C. Diminish the degree of dissociation of HI

D. None of these

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In any spontaneous process,

A. Only F decreases

B. Only A decreases

C. Both F and A decreases

D. Both F and A increase

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At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is

A. Zero

B. One

C. Infinity

D. Negative

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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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Fundamental principle of refrigeration is based on the __________ law of thermodynamics.

A. Zeroth

B. First

C. Second

D. Third

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Which of the following is not an intensive property?

A. Volume

B. Density

C. Temperature

D. Pressure

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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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The equation, (d log_e PA/d log_e xA) = (d log_e PA/d log_e xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the __________ equation.

A. Van Laar

B. Margules

C. Gibbs-Duhem

D. Gibbs-Duhem-Margules

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Chemical potential is a/an

A. Extensive property

B. Intensive property

C. Force which drives the chemical system to equilibrium

D. Both (B) and (C)

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Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K)

A. λb/Tb

B. Tb/λb

C. √(λb/Tb)

D. √(Tb/λb)

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PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process.

A. Isothermal

B. Isentropic

C. Isobaric

D. Adiabatic

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A gas performs the maximum work, when it expands

A. Non-uniformly

B. Adiabatically

C. Isobarically

D. Isothermally

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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

A. 12 P1V1

B. 6 P1 V1

C. 3 P1V1

D. P1 V1

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Pick out the correct statement.

A. Compression ratio of an Otto engine is comparatively higher than a diesel engine

B. Efficiency of an Otto engine is higher than that of a diesel engine for the same compression ratio

C. Otto engine efficiency decreases with the rise in compression ratio, due to decrease in work produced per quantity of heat

D. Diesel engine normally operates at lower compression ratio than an Otto engine for an equal output of work

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Chemical engineering thermodynamics is concerned with the __________ in/of chemical processes.

A. Reaction mechanism

B. Calculation of rates

C. Energy transformation from one form to another

D. None of these

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Which of the following is Virial equation of state?

A. (p + a/V²)(V - b) = nRT

B. PV = nRT

C. PV = A + B/V + C/V² + D/V³ + ...

D. None of these

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What is the value of Joule-Thomson co-efficient for an ideal gas?

A. +ve

B. -ve

C. 0

D. ∞

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

A. < 0

B. > 0

C. = 0

D. None of these

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At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is

A. 1.572

B. 1.9398

C. 3.389

D. 4.238

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

A. Van Laar equation

B. Margules equation

C. Wilson's equation

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

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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

D. None of these

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Clausius-Clapeyron Equation gives accurate result, when the

A. Vapour pressure is relatively low and the temperature does not vary over wide limits

B. Vapour obeys the ideal gas law and the latent heat of vaporisation is constant

C. Volume in the liquid state is negligible compared with that in the vapour state

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

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Accepted Answer

B. A perfect

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

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

A system is said to be at equilibrium, if the entropy of the system has reached __________ value.

A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is

Compressibility factor for almost all the gases are approximately same at the same

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

For spontaneous changes in an isolated system (S = entropy)

The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

When a gas is expanded from high pressure region to low pressure region; temperature change occurs. This phenomenon is related to the

For an isothermal process, the internal energy of a gas

In case of the decomposition of hydroiodic acid (2HI H₂ + I₂), addition of H₂ (at equilibrium condition) will

In any spontaneous process,

At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is

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

Fundamental principle of refrigeration is based on the __________ law of thermodynamics.

Which of the following is not an intensive property?

Activity co-efficient is a measure of the

The equation, (d log_e PA/d log_e xA) = (d log_e PA/d log_e xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the __________ equation.

Chemical potential is a/an

Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K)

PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process.

A gas performs the maximum work, when it expands

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

Pick out the correct statement.

Chemical engineering thermodynamics is concerned with the __________ in/of chemical processes.

Which of the following is Virial equation of state?

What is the value of Joule-Thomson co-efficient for an ideal gas?

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

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

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

Clausius-Clapeyron Equation gives accurate result, when the

Also checkout

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

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

A system is said to be at equilibrium, if the entropy of the system has reached __________ value.

A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is

Compressibility factor for almost all the gases are approximately same at the same

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

For spontaneous changes in an isolated system (S = entropy)

The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

When a gas is expanded from high pressure region to low pressure region; temperature change occurs. This phenomenon is related to the

For an isothermal process, the internal energy of a gas

In case of the decomposition of hydroiodic acid (2HI H2 + I2), addition of H2 (at equilibrium condition) will

In any spontaneous process,

At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is

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

Fundamental principle of refrigeration is based on the __________ law of thermodynamics.

Which of the following is not an intensive property?

Activity co-efficient is a measure of the

The equation, (d loge PA/d loge xA) = (d loge PA/d loge xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the __________ equation.

Chemical potential is a/an

Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K)

PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process.

A gas performs the maximum work, when it expands

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

Pick out the correct statement.

Chemical engineering thermodynamics is concerned with the __________ in/of chemical processes.

Which of the following is Virial equation of state?

What is the value of Joule-Thomson co-efficient for an ideal gas?

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

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

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

Clausius-Clapeyron Equation gives accurate result, when the

Also checkout

In case of the decomposition of hydroiodic acid (2HI H₂ + I₂), addition of H₂ (at equilibrium condition) will

The equation, (d log_e PA/d log_e xA) = (d log_e PA/d log_e xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the __________ equation.