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

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

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Chemical Engineering Thermodynamics
Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇋ PCl3 + Cl₂.Degree of dissociation of PCl5 will

Decrease on increasing the pressure of the system
Increase on addition of an inert gas at constant pressure
None of these
Decrease on addition of Cl₂

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Chemical Engineering Thermodynamics
Absolute zero temperature signifies the

Temperature of the heat reservoir to which a Carnot engine rejects no heat
Minimum temperature attainable
None of these
Temperature of the heat reservoir to which a Carnot engine rejects all the heat that is taken in

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