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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
A gas can be liquified by pressure alone only, when its temperature is __________ its critical temperature.

More than
Less than or equal to
Equal to or higher than
Less than

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

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

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Chemical Engineering Thermodynamics
Clayperon equation deals with the

Rate of change of vapour pressure with temperature
Effect of an inert gas on vapour pressure
Calculation of ΔF for spontaneous phase change
Temperature dependence of heat of phase transition

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

Zero
Almost 100%
Unpredictable
50%

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

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Chemical Engineering Thermodynamics
Partial molar free energy of an element A in solution is same as its

Chemical potential
Activity
Activity co-efficient
Fugacity

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