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Chemical Engineering Thermodynamics

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

At
Above
Below
Either B or C

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Chemical Engineering Thermodynamics
Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.

Increases
Remains constant
Decreases logarithmically
Decreases

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Chemical Engineering Thermodynamics
The equation, PV = nRT, is best obeyed by gases at

Low pressure & low temperature
None of these
High pressure & low temperature
Low pressure & high temperature

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Chemical Engineering Thermodynamics
Which of the following is a thermodynamic property of a system?

Concentration
Temperature
Entropy
Mass

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Chemical Engineering Thermodynamics
The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nCv ln (T₂/T₁) is valid for

Cooling of a substance
Simultaneous heating and expansion of an ideal gas
Heating of a substance
Reversible isothermal volume change

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Chemical Engineering Thermodynamics
The expression for entropy change, ΔS = n Cp . ln (T₂/T₁), is valid for the __________ of a substance.

Both B and C
Simultaneous pressure & temperature change
Cooling
Heating

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