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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
In a working refrigerator, the value of COP is always

< 1
< 0
> 1

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Chemical Engineering Thermodynamics
Entropy, which is a measure of the disorder of a system is

Independent of temperature
All of these
Independent of pressure
Zero at absolute zero temperature for a perfect crystalline substance

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Chemical Engineering Thermodynamics
Entropy change for an irreversible isolated system is

∞
> 0
< 0

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Chemical Engineering Thermodynamics
When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the

Law of corresponding state
Arrehenius hypothesis
Kopp's rule
Le-Chatelier principle

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Chemical Engineering Thermodynamics
A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system

U is constant but S decreases
U and S both decreases
U decreases but S is constant
Its internal energy (U) decreases and its entropy (S) increases

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Chemical Engineering Thermodynamics
Internal energy of an ideal gas

Decreases with increase in temperature
Is independent of temperature
Increases with increase in pressure
None of these

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