A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P₁ and P₂.(where, P₁ and P₂ are initial and final pressures respectively)

Chemical Engineering Thermodynamics
A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P₁ and P₂.(where, P₁ and P₂ are initial and final pressures respectively)

Arithmetic

Harmonic

Logarithmic

Geometric

Arithmetic

Harmonic

Logarithmic

Geometric

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Chemical Engineering Thermodynamics
PVy = constant, holds good for an isentropic process, which is

Reversible and adiabatic

Adiabatic and irreversible

Isothermal and irreversible

Reversible and isothermal

Reversible and adiabatic

Adiabatic and irreversible

Isothermal and irreversible

Reversible and isothermal

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Chemical Engineering Thermodynamics
Free energy

Decreases in all spontaneous (or irreversible) processes

Change during a spontaneous process has a negative value

Remains unchanged in reversible processes carried at constant temperature and pressure

All of these

Decreases in all spontaneous (or irreversible) processes

Change during a spontaneous process has a negative value

Remains unchanged in reversible processes carried at constant temperature and pressure

All of these

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

First fall and then rise

Increase

Decrease

Remain unchanged

First fall and then rise

Increase

Decrease

Remain unchanged

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

Partial pressure

A, B, and C

Activity co-efficient

Fugacity

Partial pressure

A, B, and C

Activity co-efficient

Fugacity

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Chemical Engineering Thermodynamics
Pick out the undesirable property for a good refrigerant.

High viscosity

Low freezing point

Large latent heat of vaporisation

High thermal conductivity

High viscosity

Low freezing point

Large latent heat of vaporisation

High thermal conductivity

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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics PVy = constant, holds good for an isentropic process, which is

Chemical Engineering Thermodynamics Free energy

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

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

Chemical Engineering Thermodynamics Pick out the undesirable property for a good refrigerant.

Chemical Engineering Thermodynamics
PVy = constant, holds good for an isentropic process, which is

Chemical Engineering Thermodynamics
Free energy

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

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

Chemical Engineering Thermodynamics
Pick out the undesirable property for a good refrigerant.