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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process.

Adiabatic
Polytropic
Isobaric
Isothermal

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Chemical Engineering Thermodynamics
The activity of an ideal gas is numerically __________ its pressure.

Equal to
Data insufficient, can't be predicted
More than
Less than

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Chemical Engineering Thermodynamics
For an irreversible process involving only pressure-volume work

(dF)T, p > 0
(dF)T, p = 0
(dF)T, p
(dA)T, v >0

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Chemical Engineering Thermodynamics
When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

= 0
< 0
None of these
> 0

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Chemical Engineering Thermodynamics
Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)?

Freon
Methyl chloride
Liquid sulphur dioxide
Ammonia

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

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

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