Chemical Engineering Thermodynamics
Out of the following refrigeration cycles, which one has maximum COP?

Ordinary vapor compression cycle
Carnot cycle
Air cycle
Vapor compression with a reversible expansion engine

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Chemical Engineering Thermodynamics
Absolute zero temperature signifies the

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

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Chemical Engineering Thermodynamics
Gibbs-Duhem equation

None of these
Applies only to binary systems
States that n₁dμ₁ + n₂dμ₂ + ....njdμj = 0, for a system of definite composition at constant temperature and pressure
Finds no application in gas-liquid equilibria involved in distillation

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