Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.

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Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.

A. Isothermal

B. Adiabatic

C. Isentropic

D. None of these

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When pressure is applied on the system, ice ↔ water, then

A. Equilibrium cannot be established

B. More ice will be formed

C. More water will be formed

D. Evaporation of water will take place

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In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when

A. C_p < C_v

B. C_p = C_v

C. C_p > C_v

D. C ≥ C_v

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Gibbs free energy of mixing at constant pressure and temperature is always

A. 0

B. ∞

C. + ve

D. - ve

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A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is

A. Zero

B. Positive

C. Negative

D. None of these

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1st law of thermodynamics is nothing but the law of conservation of

A. Momentum

B. Mass

C. Energy

D. None of these

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Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass?

A. dE = Tds - PdV

B. dQ = C_vdT + PdV

C. dQ = C_pdT + Vdp

D. Tds = dE - PdV

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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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For an exothermic reaction

A. Only enthalpy change (ΔH) is negative

B. Only internal energy change (ΔE) is negative

C. Both ΔH and ΔE are negative

D. Enthalpy change is zero

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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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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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Entropy change in case of reversible adiabatic process is

A. Minimum

B. Zero

C. Maximum

D. Indeterminate

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Which of the following is not an intensive property?

A. Chemical potential

B. Surface tension

C. Heat capacity

D. None of these

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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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Clausius-Clapeyron Equation gives accurate result, when the

A. Vapour pressure is relatively low and the temperature does not vary over wide limits

B. Vapour obeys the ideal gas law and the latent heat of vaporisation is constant

C. Volume in the liquid state is negligible compared with that in the vapour state

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

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The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture. This is

A. The statement as per Gibbs-Helmholtz

B. Called Lewis-Randall rule

C. Henry's law

D. None of these

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An ideal liquid refrigerant should

A. Not have a sub-atmospheric vapour pressure at the temperature in the refrigerator coils

B. Not have unduly high vapour pressure at the condenser temperature

C. Both (A) and (B)

D. Have low specific heat

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Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

A. Fugacity

B. Partial pressure

C. Activity co-efficient

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

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The extensive properties are

A. Volume, mass and number of moles

B. Free energy, entropy and enthalpy

C. Both (A) and (B)

D. None of these

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With increase in compression ratio, the efficiency of the otto engine

A. Increases

B. Decreases

C. Remain constant

D. Increases linearly

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The gas law (PV = RT) is true for an __________ change.

A. Isothermal

B. Adiabatic

C. Both (A) & (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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At the critical point of a substance

A. The surface tension vanishes

B. Liquid and vapour have the same density

C. There is no distinction between liquid and vapour phases

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

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Sound waves propagation in air exemplifies an __________ process.

A. Adiabatic

B. Isothermal

C. Isometric

D. None of these

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

A. 0

B. ∞

C. 50

D. 100

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At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

A. μ° + RT ln f

B. μ°+ R ln f

C. μ° + T ln f

D. μ° + R/T ln f

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In a working refrigerator, the value of COP is always

A. 0

B. < 0

C. < 1

D. > 1

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Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to __________ °C.

A. 270

B. 327

C. 300

D. 540

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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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The equation DU = Tds - PdV is applicable to infinitesimal changes occuring in

A. An open system of constant composition

B. A closed system of constant composition

C. An open system with changes in composition

D. A closed system with changes in composition

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

A. C_V

B. Entropy change

C. Gibbs free energy

D. None of these

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Accepted Answer

A. Isothermal

Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

When pressure is applied on the system, ice ↔ water, then

In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when

Gibbs free energy of mixing at constant pressure and temperature is always

A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is

1st law of thermodynamics is nothing but the law of conservation of

Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass?

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

For an exothermic reaction

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

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

Entropy change in case of reversible adiabatic process is

Which of the following is not an intensive property?

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

Clausius-Clapeyron Equation gives accurate result, when the

The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture. This is

An ideal liquid refrigerant should

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

The extensive properties are

With increase in compression ratio, the efficiency of the otto engine

The gas law (PV = RT) is true for an __________ change.

Which of the following has the least thermal efficiency?

At the critical point of a substance

Sound waves propagation in air exemplifies an __________ process.

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

At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

In a working refrigerator, the value of COP is always

Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to __________ °C.

Pick out the wrong statement.

The equation DU = Tds - PdV is applicable to infinitesimal changes occuring in

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

Also checkout

Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

When pressure is applied on the system, ice ↔ water, then

In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when

Gibbs free energy of mixing at constant pressure and temperature is always

A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is

1st law of thermodynamics is nothing but the law of conservation of

Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass?

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

For an exothermic reaction

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

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

Entropy change in case of reversible adiabatic process is

Which of the following is not an intensive property?

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

Clausius-Clapeyron Equation gives accurate result, when the

The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture. This is

An ideal liquid refrigerant should

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

The extensive properties are

With increase in compression ratio, the efficiency of the otto engine

The gas law (PV = RT) is true for an __________ change.

Which of the following has the least thermal efficiency?

At the critical point of a substance

Sound waves propagation in air exemplifies an __________ process.

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

At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

In a working refrigerator, the value of COP is always

Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to __________ °C.

Pick out the wrong statement.

The equation DU = Tds - PdV is applicable to infinitesimal changes occuring in

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

Also checkout

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

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

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