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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
Heat is added at constant temperature in an ideal __________ cycle.

None of these
Rankine
Brayton
Stirling

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Chemical Engineering Thermodynamics
Which of the following has the minimum value of COP for a given refrigeration effect?

Vapour-compression process with a reversible expansion engine
Reverse Carnot cycle
Air refrigeration cycle
Ordinary vapour-compression cycle

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Chemical Engineering Thermodynamics
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

Fusion
Vaporisation
Transition
None of these

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Chemical Engineering Thermodynamics
PVy = constant, holds good for an isentropic process, which is

Adiabatic and irreversible
Isothermal and irreversible
Reversible and isothermal
Reversible and adiabatic

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Chemical Engineering Thermodynamics
For a spontaneous process, free energy

Decreases whereas the entropy increases
And entropy both decrease
Is zero
Increases

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

< 0
> 1
< 1

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