Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.

Question

Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.

A. Less than

B. Same as

C. More than

D. Half

Share this question with your friends

Show all Chemical Engineering Thermodynamics MCQ

Comment

Claude gas liquefaction process employs cooling

A. At constant pressure

B. By throttling

C. By expansion in an engine

D. None of these

Discuss this answer

Extensive properties of a thermodynamic system depend upon the __________ of the system.

A. Specific volume

B. Temperature

C. Mass

D. Pressure

Discuss this answer

Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

A. Fusion

B. Vaporisation

C. Transition

D. None of these

Discuss this answer

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

A. Increase

B. Decrease

C. Remain unchanged

D. First fall and then rise

Discuss this answer

Pick out the extensive property out of the following.

A. Surface tension

B. Free energy

C. Specific heat

D. Refractive index

Discuss this answer

__________ 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)

Discuss this answer

Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg. K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is

A. Superheated vapour

B. Partially condensed vapour with quality of 0.9

C. Saturated vapour

D. Partially condensed vapour with quality of 0.1

Discuss this answer

Efficiency of a Carnot engine working between temperatures T₁ and T₂ (T₁ < T) is

A. (T₂ - T₁)/T₂

B. (T₂ - T₁)/T₁

C. (T₁ - T₂)/T₂

D. (T₁ - T₂)/T₁

Discuss this answer

There is a change in __________ during the phase transition.

A. Volume

B. Pressure

C. Temperature

D. All a, b & c

Discuss this answer

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

Discuss this answer

The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.

A. Temperature

B. Pressure

C. Composition

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

Discuss this answer

During Joule-Thomson expansion of gases

A. Enthalpy remains constant

B. Entropy remains constant

C. Temperature remains constant

D. None of these

Discuss this answer

For any system, what is the minimum number of degrees of freedom?

A. 0

B. 1

C. 2

D. 3

Discuss this answer

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

Discuss this answer

As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches

A. Zero

B. Unity

C. Infinity

D. An indeterminate value

Discuss this answer

Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

A. 1

B. 2

C. 3

D. 4

Discuss this answer

Which of the following represents the Virial equation of state?

A. T = [RT/(V- b)] - [a/√T. V(V + b)]

B. PV/RT = 1 + (B/V) + (C/V²) + ……

C. n₁u₂ + μ₂μ₁ = 0

D. None of these

Discuss this answer

Pick out the wrong statement.

A. Minimum number of degree of freedom of a system is zero

B. Degree of freedom of a system containing a gaseous mixture of helium, carbon dioxide and hydrogen is 4

C. For a two phase system in equilibrium made up of four non-reacting chemical species, the number of degrees of freedom is 4

D. Enthalpy and internal energy change is zero during phase change processes like melting, vaporisation and sublimation

Discuss this answer

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

A. Δ S₁ is always < Δ S_R

B. Δ S₁ is sometimes > Δ S_R

C. Δ S₁ is always > Δ S_R

D. Δ S₁ is always = Δ S_R

Discuss this answer

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

A. +ve

B. -ve

C. 0

D. ∞

Discuss this answer

The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)_T = T(∂P/∂T)_H - P. This equation is called the

A. Maxwell's equation

B. Thermodynamic equation of state

C. Equation of state

D. Redlich-Kwong equation of state

Discuss this answer

Which of the following is an undesirable characteristic of a refrigerant?

A. It should be non-explosive

B. It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils

C. Its vapor pressure at the condenser temperature should be very high

D. None of these

Discuss this answer

Fugacity is most helpful in

A. Representing actual behaviour of real gases

B. Representing actual behaviour of ideal gases

C. The study of chemical equilibria involving gases at atmospheric pressure

D. None of these

Discuss this answer

Pick out the correct statement.

A. If an insoluble gas is passed through a volatile liquid placed in a perfectly insulated container, the temperature of the liquid will increase

B. A process is irreversible as long as Δ S for the system is greater than zero

C. The mechanical work done by a system is always equal to∫P.dV

D. The heat of formation of a compound is defined as the heat of reaction leading to the formation of the compound from its reactants

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

Melting of ice exemplifies a/an

A. Adiabatic process

B. Endothermic reaction

C. Exothermic reaction

D. Process involving a chemical reaction

Discuss this answer

A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

A. 448

B. 224

C. 22.4

D. Data insufficient; can't be computed

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

Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a

A. Straight line

B. Sine curve

C. Parabola

D. Hyperbola

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

Accepted Answer

A. Less than

Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Claude gas liquefaction process employs cooling

Extensive properties of a thermodynamic system depend upon the __________ of the system.

Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

Pick out the extensive property out of the following.

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

Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg. K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is

Efficiency of a Carnot engine working between temperatures T₁ and T₂ (T₁ < T) is

There is a change in __________ during the phase transition.

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

The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.

During Joule-Thomson expansion of gases

For any system, what is the minimum number of degrees of freedom?

Pick out the wrong statement.

As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches

Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

Which of the following represents the Virial equation of state?

Pick out the wrong statement.

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

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

The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)_T = T(∂P/∂T)_H - P. This equation is called the

Which of the following is an undesirable characteristic of a refrigerant?

Fugacity is most helpful in

Pick out the correct statement.

Specific volume of an ideal gas is

Melting of ice exemplifies a/an

A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

Pick out the wrong statement.

Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a

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

Also checkout

Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Claude gas liquefaction process employs cooling

Extensive properties of a thermodynamic system depend upon the __________ of the system.

Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

Pick out the extensive property out of the following.

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

Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg. K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is

Efficiency of a Carnot engine working between temperatures T1 and T2 (T1 < T) is

There is a change in __________ during the phase transition.

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

The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.

During Joule-Thomson expansion of gases

For any system, what is the minimum number of degrees of freedom?

Pick out the wrong statement.

As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches

Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

Which of the following represents the Virial equation of state?

Pick out the wrong statement.

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively)

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

The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)T = T(∂P/∂T)H - P. This equation is called the

Which of the following is an undesirable characteristic of a refrigerant?

Fugacity is most helpful in

Pick out the correct statement.

Specific volume of an ideal gas is

Melting of ice exemplifies a/an

A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

Pick out the wrong statement.

Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a

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

Also checkout

Efficiency of a Carnot engine working between temperatures T₁ and T₂ (T₁ < T) is

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)_T = T(∂P/∂T)_H - P. This equation is called the