Chemical Engineering Thermodynamics
Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the

Mass and pressure both of the working fluid
Two temperatures only
Pressure of working fluid
Mass of the working fluid

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Chemical Engineering Thermodynamics
Which of the following is an undesirable characteristics of a refrigerant ?

None of these
It should be non-explosive
It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils
Its vapor pressure at the condenser temperature should be very high

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