Fugacity is a measure of the

Question

Fugacity is a measure of the

A. Escaping tendencies of the same substance in different phases of a system

B. Relative volatility of a mixture of two miscible liquids

C. Behaviour of ideal gases

D. None of these

Share this question with your friends

Show all Chemical Engineering Thermodynamics MCQ

Comment

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

Discuss this answer

__________ functions are exemplified by heat and work.

A. Path

B. Point

C. State

D. None of these

Discuss this answer

__________ increases with increase in pressure.

A. The melting point of wax

B. The boiling point of a liquid

C. Both (A) and (B)

D. Neither (A) nor (B)

Discuss this answer

Trouton's ratio of __________ liquids is calculated using Kistyakowsky equation.

A. Polar

B. Non-polar

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole. °K

A. 0

B. ∞

C. 50

D. 100

Discuss this answer

Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = C_p/C_v = 7/5) and the process to be reversible, is

A. 300 × (3^2/7)

B. 300 × (3^3/5)

C. 300 × (33^3/7)

D. 300 × (3^5/7)

Discuss this answer

Isentropic process means a constant __________ process.

A. Enthalpy

B. Pressure

C. Entropy

D. None of these

Discuss this answer

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)

Discuss this answer

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

Discuss this answer

What is the degree of freedom for two miscible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope?

A. 0

B. 1

C. 2

D. 3

Discuss this answer

The first law of thermodynamics is a statement of conservation of

A. Heat

B. Momentum

C. Energy

D. Work

Discuss this answer

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

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

Discuss this answer

Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of

A. Solution

B. Vaporisation

C. Formation

D. Sublimation

Discuss this answer

The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of

A. T

B. T and P

C. T, P and Z

D. T and Z

Discuss this answer

Pick out the Clausius-Clapeyron equation from the following:

A. dP/dT = ΔH/TΔV

B. ln P = - (ΔH/RT) + constant

C. ΔF = ΔH + T [∂(ΔF)/∂T]_P

D. None of these

Discuss this answer

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

Discuss this answer

In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

A. Adiabatic

B. Reversible

C. Isothermal

D. None of these

Discuss this answer

The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is

A. 100,000 kW

B. 160,000 kW

C. 200,000 kW

D. 320,000 kW

Discuss this answer

Specific volume of an ideal gas is

A. Equal to its density

B. The reciprocal of its density

C. Proportional to pressure

D. None of these

Discuss this answer

In the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.

A. Increase

B. Decrease

C. Not alter

D. None of these

Discuss this answer

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?

A. T_R/(T₂ - T_R) × (T₁ - T₂)/T₁

B. T_R/(T₂ - T_R) × T₁/(T₁ - T₂)

C. T_R/(T₁ - T_R) × (T₁ - T₂)/T₁

D. None of these

Discuss this answer

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

Discuss this answer

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

Discuss this answer

A refrigeration cycle is the same as a __________ cycle,

A. Turbine

B. Heat engine

C. Reversed heat engine

D. None of these

Discuss this answer

Change of state namely evaporation condensation, freezing and melting is an __________ process.

A. Isothermal

B. Adiabatic

C. Isobaric

D. Isochoric

Discuss this answer

The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

A. Lowest

B. Highest

C. Average

D. None of these

Discuss this answer

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

A. Any

B. A perfect

C. An easily liquefiable

D. A real

Discuss this answer

(∂T/∂P)H is the mathematical expression for

A. Specific heat at constant pressure (C_p)

B. Specific heat at constant volume (C_v)

C. Joule-Thompson co-efficient

D. None of these

Discuss this answer

On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will

A. Increase

B. Decrease

C. Remain same

D. Increase in summer and will decrease in winter

Discuss this answer

Accepted Answer

A. Escaping tendencies of the same substance in different phases of a system

Fugacity is a measure of the

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

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.

__________ functions are exemplified by heat and work.

__________ increases with increase in pressure.

Trouton's ratio of __________ liquids is calculated using Kistyakowsky equation.

Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole. °K

Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = C_p/C_v = 7/5) and the process to be reversible, is

Isentropic process means a constant __________ process.

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

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

What is the degree of freedom for two miscible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope?

The first law of thermodynamics is a statement of conservation of

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

Pick out the wrong statement.

Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of

The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of

Pick out the Clausius-Clapeyron equation from the following:

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

In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is

Specific volume of an ideal gas is

In the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?

Pick out the wrong statement.

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 refrigeration cycle is the same as a __________ cycle,

Change of state namely evaporation condensation, freezing and melting is an __________ process.

The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

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

(∂T/∂P)H is the mathematical expression for

On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will

Also checkout

Fugacity is a measure of the

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

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.

__________ functions are exemplified by heat and work.

__________ increases with increase in pressure.

Trouton's ratio of __________ liquids is calculated using Kistyakowsky equation.

Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole. °K

Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is

Isentropic process means a constant __________ process.

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

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

What is the degree of freedom for two miscible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope?

The first law of thermodynamics is a statement of conservation of

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

Pick out the wrong statement.

Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of

The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of

Pick out the Clausius-Clapeyron equation from the following:

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

In polytropic process (PVn = constant), if n = 1; it means a/an __________ process.

The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is

Specific volume of an ideal gas is

In the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR (where, T1 and T2 are source & surrounding temperatures respectively.)?

Pick out the wrong statement.

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 refrigeration cycle is the same as a __________ cycle,

Change of state namely evaporation condensation, freezing and melting is an __________ process.

The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

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

(∂T/∂P)H is the mathematical expression for

On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will

Also checkout

Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = C_p/C_v = 7/5) and the process to be reversible, is

In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

In the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?