The internal energy of an ideal gas does not change in a reversible __________ process.

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The internal energy of an ideal gas does not change in a reversible __________ process.

A. Isothermal

B. Adiabatic

C. Isobaric

D. Isometric

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The activity of an ideal gas is numerically __________ its pressure.

A. More than

B. Less than

C. Equal to

D. Data insufficient, can't be predicted

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Filling of gas from a high pressure cylinder into small bottles is an example of a/an __________ process.

A. Equilibrium

B. Adiabatic

C. Steady

D. Unsteady

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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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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

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The principle applied in liquefaction of gases is

A. Adiabatic expansion

B. Joule-Thomson effect

C. Both (A) and (B)

D. Neither (A) nor (B)

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

A. Less than

B. Same as

C. More than

D. Half

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The work done in isothermal compression compared to that in adiabatic compression will be

A. Less

B. More

C. Same

D. More or less depending upon the extent of work done

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Domestic refrigerator usually works on the __________ refrigeration cycle.

A. Carnot

B. Air

C. Absorption

D. vapour-ejection

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For a constant volume process __________ by the system is used only to increase the internal energy.

A. Heat absorbed

B. Work done

C. Both (A) & (B)

D. Neither (A) nor (B)

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The compressibility factor for an ideal gas is 1. Its value for any other real gas is

A. 1

B. < 1

C. > 1

D. Either (B) or (C), depends on the nature of the gas

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At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.

A. 72

B. 92

C. 142

D. 192

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In jet refrigerators, the refrigerating fluid is practically always

A. Water

B. Ammonia

C. Freon

D. Brine

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Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

A. Below

B. At

C. Above

D. Either 'b' or 'c'

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

A. Adiabatic

B. Reversible

C. Isothermal

D. None of these

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Melting of wax is accompanied with __________ in entropy.

A. Increase

B. Decrease

C. No change

D. None of these

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At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.

A. Eutectic

B. Triple

C. Plait

D. Critical

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Entropy is a/an

A. State function

B. Macroscopic property

C. Extensive property

D. None of these

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Adiabatic compression of a saturated water vapour makes it

A. Supersaturated

B. Superheated

C. Both (A) and (B)

D. Neither (A) nor (B)

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The expression, nC_v(T₂ - T₁), is for the __________ of an ideal gas.

A. Work done under adiabatic condition

B. Co-efficient of thermal expansion

C. Compressibility

D. None of these

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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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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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Which of the following processes cannot be made reversible even under ideal condition of operation?

A. Free expansion of a gas

B. Compression of air in a compressor

C. Expansion of steam in a turbine

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

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In a reversible chemical reaction (where, Δx = number of moles of products-number of moles of reactants)

A. Addition of inert gas favours the forward reaction, when Δx is positive

B. Pressure has no effect on equilibrium, when Δn = 0

C. Addition of inert gas has no effect on the equilibrium constant at constant volume for any value of Δx (+ ve, - ve) or zero)

D. All 'a', 'b' & 'c'

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Internal energy is equal to the heat absorbed in case of a/an __________ process.

A. Constant volume

B. Polytropic

C. Adiabatic

D. Constant pressure

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

A. Polar

B. Non-polar

C. Both (A) & (B)

D. Neither (A) nor (B)

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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)

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Heat is added at constant pressure in an ideal __________ cycle.

A. Stirling

B. Brayton

C. Rankine

D. Both (B) and (C)

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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

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Accepted Answer

A. Isothermal

The internal energy of an ideal gas does not change in a reversible __________ process.

Correct Answer :

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Related Questions

The activity of an ideal gas is numerically __________ its pressure.

Filling of gas from a high pressure cylinder into small bottles is an example of a/an __________ process.

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

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

The principle applied in liquefaction of gases is

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

The work done in isothermal compression compared to that in adiabatic compression will be

Domestic refrigerator usually works on the __________ refrigeration cycle.

For a constant volume process __________ by the system is used only to increase the internal energy.

The compressibility factor for an ideal gas is 1. Its value for any other real gas is

At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.

In jet refrigerators, the refrigerating fluid is practically always

Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

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

Melting of wax is accompanied with __________ in entropy.

At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.

Entropy is a/an

Adiabatic compression of a saturated water vapour makes it

The expression, nC_v(T₂ - T₁), is for the __________ of an ideal gas.

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

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

Which of the following processes cannot be made reversible even under ideal condition of operation?

In a reversible chemical reaction (where, Δx = number of moles of products-number of moles of reactants)

Internal energy is equal to the heat absorbed in case of a/an __________ process.

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

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

Heat is added at constant pressure in an ideal __________ cycle.

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

Also checkout

The internal energy of an ideal gas does not change in a reversible __________ process.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The activity of an ideal gas is numerically __________ its pressure.

Filling of gas from a high pressure cylinder into small bottles is an example of a/an __________ process.

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

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

The principle applied in liquefaction of gases is

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

The work done in isothermal compression compared to that in adiabatic compression will be

Domestic refrigerator usually works on the __________ refrigeration cycle.

For a constant volume process __________ by the system is used only to increase the internal energy.

The compressibility factor for an ideal gas is 1. Its value for any other real gas is

At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.

In jet refrigerators, the refrigerating fluid is practically always

Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

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

Melting of wax is accompanied with __________ in entropy.

At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.

Entropy is a/an

Adiabatic compression of a saturated water vapour makes it

The expression, nCv(T2 - T1), is for the __________ of an ideal gas.

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

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

Which of the following processes cannot be made reversible even under ideal condition of operation?

In a reversible chemical reaction (where, Δx = number of moles of products-number of moles of reactants)

Internal energy is equal to the heat absorbed in case of a/an __________ process.

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

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

Heat is added at constant pressure in an ideal __________ cycle.

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

Also checkout

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

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

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

The expression, nC_v(T₂ - T₁), is for the __________ of an ideal gas.

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