Chemical Engineering Thermodynamics
Which of the following will increase the volume of a real gas by four times ?

Reducing pressure to one fourth at constant temperature
Reducing the temperature to half and doubling the pressure
Doubling the absolute temperature as well as pressure of the gas
Reducing temperature to one fourth at constant pressure

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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

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

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