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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
If atmospheric temperature and dew point are nearly equal, then the relative humidity is

Almost 100%
Zero
Unpredictable
50%

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Chemical Engineering Thermodynamics
The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

Less than
Either B or C; depends on the type of alloy
Equal to
More than

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Chemical Engineering Thermodynamics
Which of the following equations is used for the prediction of activity co-efficient from experiments?

Wilson's equation
Van Laar equation
All of these
Margules equation

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

Work done under adiabatic condition
Co-efficient of thermal expansion
Compressibility
None of these

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Chemical Engineering Thermodynamics
Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as

C = P - F + 2
F = C - P - 2
P + F - C = 2
P = F - C - 2

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Chemical Engineering Thermodynamics
The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is

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

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