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

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

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Chemical Engineering Thermodynamics
Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which

None of these
Mutual solubility of the two liquids shows a decreasing trend
Two liquids are completely separated into two layers
A homogeneous solution (say of phenol water) is formed

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