Entropy change of mixing two liquid substances depends upon the

Question

Entropy change of mixing two liquid substances depends upon the

A. Molar concentration

B. Quantity (i.e. number of moles)

C. Both (A) and (B)

D. Neither (A) nor (B)

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Pick out the correct statement.

A. The available energy in an isolated system for all irreversible (real) processes decreases

B. The efficiency of a Carnot engine increases, if the sink temperature is decreased

C. The reversible work for compression in non-flow process under isothermal condition is the change in Helmholtz free energy

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

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y = specific heat ratio of an ideal gas is equal to

A. C_p/C_v

B. C_p/(C_P-R)

C. 1 + (R/C_V)

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

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Isobaric process means a constant process.

A. Temperature

B. Pressure

C. Volume

D. Entropy

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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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The unity of Planck's constant 'h' in the equation, E = hv is

A. J/s

B. J.S

C. J/kmol

D. kmol/J

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The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

A. Less than

B. Equal to

C. More than

D. Either (B) or (C); depends on the type of alloy

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Entropy change for an irreversible isolated system is

A. ∞

B. 0

C. < 0

D. > 0

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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

D. None of these

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In a homogeneous solution, the fugacity of a component depends upon the

A. Pressure

B. Composition

C. Temperature

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

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Pick out the undesirable property for a good refrigerant.

A. High thermal conductivity

B. Low freezing point

C. Large latent heat of vaporisation

D. High viscosity

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The equation Tds = dE - PdV applies to

A. Single phase fluid of varying composition

B. Single phase fluid of constant composition

C. Open as well as closed systems

D. Both (B) and (C)

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For an isothermal reversible compression of an ideal gas

A. Only ΔE = 0

B. Only ΔH =0

C. ΔE = ΔH = 0

D. dQ = dE

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Degrees of freedom at triple point will be

A. 0

B. 1

C. 2

D. 3

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With increase in pressure (above atmospheric pressure), the C_p of a gas

A. Increases

B. Decreases

C. Remains unchanged

D. First decreases and then increases

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For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist at equilibrium is

A. x

B. x + 1

C. x + 2

D. x + 3

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The specific heat of saturated water vapour at 100°C is

A. ∞

B. -ve

C. 0

D. +ve

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Second law of thermodynamics is concerned with the

A. Amount of energy transferred

B. Direction of energy transfer

C. Irreversible processes only

D. Non-cyclic processes only

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Number of degrees of freedom for a three phase system in equilibrium comprising of three nonreacting chemical species is

A. 2

B. 0

C. 1

D. 3

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Pick out the wrong statement.

A. The chemical potential of a pure substance depends upon the temperature and pressure

B. The chemical potential of a component in a system is directly proportional to the escaping tendency of that component

C. The chemical potential of ith species (μ_i) in an ideal gas mixture approaches zero as the pressure or mole fraction (x_i) tends to be zero at constant temperature

D. The chemical potential of species 'i' in the mixture (μ_i) is mathematically represented as,μ_i = ∂(nG)/∂ni]_T,P,nj where, n, n_i and n_j respectively denote the total number of moles, moles of i^th species and all mole numbers except ith species. 'G' is Gibbs molar free energy

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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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Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates

A. Use of only one graph for all gases

B. Covering of wide range

C. Easier plotting

D. More accurate plotting

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Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.

A. Superheated

B. Desuperheated

C. Non-condensable

D. None of these

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During a reversible isothermal expansion of an ideal gas, the entropy change is

A. +ve

B. 0

C. -ve

D. ∞

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__________ decreases during adiabatic throttling of a perfect gas.

A. Entropy

B. Temperature

C. Enthalpy

D. Pressure

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Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition that the molar volume of liquid is negligible compared to that of the vapor?

A. d ln p/dt = H_vap/RT²

B. d ln p/dt = RT²/H_vap

C. dp/dt = RT²/H_vap

D. dp/dt = H_vap/RT²

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__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

A. Entropy

B. Gibbs free energy

C. Internal energy

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

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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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Which of the following has the least thermal efficiency?

A. Steam engine

B. Carnot engine

C. Diesel engine

D. Otto engine

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If two gases have same reduced temperature and reduced pressure, then they will have the same

A. Volume

B. Mass

C. Critical temperature

D. None of these

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Co-efficient of performance for a reversed Carnot cycle working between temperatures T₁ and T₂ (T₁ > T₂) is

A. T₂/(T₁ - T₂)

B. T₁/(T₁ - T₂)

C. (T₁ - T₂)/T₁

D. (T₁ - T₂)/T₂

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Accepted Answer

C. Both (A) and (B)

Entropy change of mixing two liquid substances depends upon the

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Pick out the correct statement.

y = specific heat ratio of an ideal gas is equal to

Isobaric process means a constant process.

Pick out the wrong statement:

The unity of Planck's constant 'h' in the equation, E = hv is

The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

Entropy change for an irreversible isolated system is

Internal energy of an ideal gas

In a homogeneous solution, the fugacity of a component depends upon the

Pick out the undesirable property for a good refrigerant.

The equation Tds = dE - PdV applies to

For an isothermal reversible compression of an ideal gas

Degrees of freedom at triple point will be

With increase in pressure (above atmospheric pressure), the C_p of a gas

For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist at equilibrium is

The specific heat of saturated water vapour at 100°C is

Second law of thermodynamics is concerned with the

Number of degrees of freedom for a three phase system in equilibrium comprising of three nonreacting chemical species is

Pick out the wrong statement.

An isentropic process is carried out at constant

Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates

Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.

During a reversible isothermal expansion of an ideal gas, the entropy change is

__________ decreases during adiabatic throttling of a perfect gas.

Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition that the molar volume of liquid is negligible compared to that of the vapor?

__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

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

Which of the following has the least thermal efficiency?

If two gases have same reduced temperature and reduced pressure, then they will have the same

Co-efficient of performance for a reversed Carnot cycle working between temperatures T₁ and T₂ (T₁ > T₂) is

Also checkout

Entropy change of mixing two liquid substances depends upon the

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Pick out the correct statement.

y = specific heat ratio of an ideal gas is equal to

Isobaric process means a constant process.

Pick out the wrong statement:

The unity of Planck's constant 'h' in the equation, E = hv is

The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

Entropy change for an irreversible isolated system is

Internal energy of an ideal gas

In a homogeneous solution, the fugacity of a component depends upon the

Pick out the undesirable property for a good refrigerant.

The equation Tds = dE - PdV applies to

For an isothermal reversible compression of an ideal gas

Degrees of freedom at triple point will be

With increase in pressure (above atmospheric pressure), the Cp of a gas

For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist at equilibrium is

The specific heat of saturated water vapour at 100°C is

Second law of thermodynamics is concerned with the

Number of degrees of freedom for a three phase system in equilibrium comprising of three nonreacting chemical species is

Pick out the wrong statement.

An isentropic process is carried out at constant

Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates

Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.

During a reversible isothermal expansion of an ideal gas, the entropy change is

__________ decreases during adiabatic throttling of a perfect gas.

Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition that the molar volume of liquid is negligible compared to that of the vapor?

__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

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

Which of the following has the least thermal efficiency?

If two gases have same reduced temperature and reduced pressure, then they will have the same

Co-efficient of performance for a reversed Carnot cycle working between temperatures T1 and T2 (T1 > T2) is

Also checkout

With increase in pressure (above atmospheric pressure), the C_p of a gas

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

Co-efficient of performance for a reversed Carnot cycle working between temperatures T₁ and T₂ (T₁ > T₂) is