Chemical Engineering Thermodynamics
Requisites of a reversible process is that the

None of these
System and surroundings temperature be equal
Friction in the system should be absent
System and surroundings pressure be equal

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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

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

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