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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
Entropy of a substance remains constant during a/an __________ change.

Irreversible isothermal
Reversible isothermal
None of these
Reversible adiabatic

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Chemical Engineering Thermodynamics
The intensive properties are

Refractive index and surface tension
None of these
Molar volume, density, viscosity and boiling point
Both A and B

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Chemical Engineering Thermodynamics
For a cyclic process, a fixed ratio between heat and work

Never exists
Is difficult to predict
May exist
Always exists

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Chemical Engineering Thermodynamics
Which of the following identities can be most easily used to verify steam table data for superheated steam.

(∂V/∂T)P = -(∂S/∂P)T
(∂P/∂T)V = (∂S/∂V)T
(∂T/∂V)S = (∂p/∂S)V
(∂T/∂P)S = (∂V/∂S)P

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Chemical Engineering Thermodynamics
A change in state involving a decrease in entropy can be spontaneous, only if

It takes place at constant volume
It takes place isothermally
It is isenthalpic
It is exothermic

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Chemical Engineering Thermodynamics
Reduced pressure of a gas is the ratio of its

Critical pressure to pressure
Pressure to critical pressure
Pressure to pseudocritical pressure
Pseudocritical pressure to pressure

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