Pick out the wrong statement.

Question

Pick out the wrong statement.

A. A closed system does not permit exchange of mass with its surroundings but may permit exchange of energy.

B. An open system permits exchange of both mass and energy with its surroundings

C. The term microstate is used to characterise an individual, whereas macro-state is used to designate a group of micro-states with common characteristics

D. None of the above

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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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If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

A. Volume

B. Enthalpy

C. Both (A) & (B)

D. Neither (A) nor (B)

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The number of degrees of freedom for a mixture of ice and water (liquid) are

A. 3

B. 2

C. 1

D. 0

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Normal temperature and pressure (N.T.P.) corresponds to

A. 0°C and 760 mm Hg

B. 15°C and 760 mm Hg

C. 20°C and 760 mm Hg

D. 0°C and 1 kgf/cm²

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Equilibrium constant of a reaction varies with the

A. Initial concentration of the reactant

B. Pressure

C. Temperature

D. None of these

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In a homogeneous solution, the activity coefficient of a component depends upon the

A. Pressure

B. Composition

C. Temperature

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

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The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

A. Less

B. More

C. Same

D. Dependent on climatic conditions

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What is the value of ln y (where y = activity co-efficient) for ideal gases?

A. Zero

B. Unity

C. Infinity

D. Negative

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Refrigeration capacity of a household refrigerator may be round about __________ tons.

A. 0.15

B. 1.5

C. 4.5

D. 6.5

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The Joule-Thomson co-efficient is defined as (∂T/∂P)_H. Its value at the inversion point is

A. ∞

B. 1

C. 0

D. -ve

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Gibbs-Duhem equation

A. States that n₁dμ₁ + n₂dμ₂ + ....n_jdμ_j = 0, for a system of definite composition at constant temperature and pressure

B. Applies only to binary systems

C. Finds no application in gas-liquid equilibria involved in distillation

D. None of these

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The equation, PV = nRT, is best obeyed by gases at

A. Low pressure & high temperature

B. High pressure & low temperature

C. Low pressure & low temperature

D. None of these

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The first law of thermodynamics is a statement of conservation of

A. Heat

B. Momentum

C. Energy

D. Work

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A system in which there is exchange of energy but not of mass, is called a/an __________ system.

A. Isolated

B. Open

C. Insulated

D. Closed

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In the reaction; N₂ + O₂ 2NO, increasing the pressure will result in

A. Shifting the equilibrium towards right

B. Shifting the equilibrium towards left

C. No change in equilibrium condition

D. None of these

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What is the degree of freedom for a system comprising liquid water equilibrium with its vapour?

A. 0

B. 1

C. 2

D. 3

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The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is

A. R log_e 4

B. R log₁₀ 4

C. C_v log₁₀ 4

D. C_v log_e 4

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For a constant volume process

A. dE = C_pdT

B. dE = C_vdT

C. dQ = dE + pdV

D. dW = pdV

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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

Discuss this answer

During adiabatic expansion of gas

A. Pressure remains constant

B. Pressure is increased

C. Temperature remains constant

D. None of these

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Mollier chart is a __________ plot.

A. Pressure vs. enthalpy

B. Pressure vs. volume

C. Enthalpy vs. entropy

D. Temperature vs. entropy

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Which is not a refrigerant?

A. SO₂

B. NH₃

C. CCl₂F₂

D. C₂H₄Cl₂

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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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The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same.

A. Kinematic viscosity

B. Work

C. Temperature

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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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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Gibbs phase rule finds application, when heat transfer occurs by

A. Conduction

B. Convection

C. Radiation

D. Condensation

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For a reversible process involving only pressure-volume work

A. (dF)_T, p < 0

B. (dF)_T, p > 0

C. (dF)_T, p = 0

D. (dA)_T, v < 0

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COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about

A. 0.5

B. 3.5

C. 4.5

D. 8.5

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Specific/molar Gibbs free energy for a pure substance does not change during

A. Sublimation

B. Vaporisation

C. Melting

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

Discuss this answer

Accepted Answer

D. None of the above

Pick out the wrong statement.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

A gas performs the maximum work, when it expands

If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

The number of degrees of freedom for a mixture of ice and water (liquid) are

Normal temperature and pressure (N.T.P.) corresponds to

Equilibrium constant of a reaction varies with the

In a homogeneous solution, the activity coefficient of a component depends upon the

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

What is the value of ln y (where y = activity co-efficient) for ideal gases?

Refrigeration capacity of a household refrigerator may be round about __________ tons.

The Joule-Thomson co-efficient is defined as (∂T/∂P)_H. Its value at the inversion point is

Gibbs-Duhem equation

The equation, PV = nRT, is best obeyed by gases at

The first law of thermodynamics is a statement of conservation of

A system in which there is exchange of energy but not of mass, is called a/an __________ system.

In the reaction; N₂ + O₂ 2NO, increasing the pressure will result in

What is the degree of freedom for a system comprising liquid water equilibrium with its vapour?

The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is

For a constant volume process

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

During adiabatic expansion of gas

Mollier chart is a __________ plot.

Which is not a refrigerant?

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

The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same.

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

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

Gibbs phase rule finds application, when heat transfer occurs by

For a reversible process involving only pressure-volume work

COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about

Specific/molar Gibbs free energy for a pure substance does not change during

Also checkout

Pick out the wrong statement.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

A gas performs the maximum work, when it expands

If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

The number of degrees of freedom for a mixture of ice and water (liquid) are

Normal temperature and pressure (N.T.P.) corresponds to

Equilibrium constant of a reaction varies with the

In a homogeneous solution, the activity coefficient of a component depends upon the

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

What is the value of ln y (where y = activity co-efficient) for ideal gases?

Refrigeration capacity of a household refrigerator may be round about __________ tons.

The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is

Gibbs-Duhem equation

The equation, PV = nRT, is best obeyed by gases at

The first law of thermodynamics is a statement of conservation of

A system in which there is exchange of energy but not of mass, is called a/an __________ system.

In the reaction; N2 + O2 2NO, increasing the pressure will result in

What is the degree of freedom for a system comprising liquid water equilibrium with its vapour?

The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is

For a constant volume process

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

During adiabatic expansion of gas

Mollier chart is a __________ plot.

Which is not a refrigerant?

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

The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same.

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

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

Gibbs phase rule finds application, when heat transfer occurs by

For a reversible process involving only pressure-volume work

COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about

Specific/molar Gibbs free energy for a pure substance does not change during

Also checkout

The Joule-Thomson co-efficient is defined as (∂T/∂P)_H. Its value at the inversion point is

In the reaction; N₂ + O₂ 2NO, increasing the pressure will result in

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

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