Mass Transfer
Flash distillation is suitable for the separation of components

Which form maximum boiling azeotrope
Which form minimum boiling azeotrope
Having very close boiling points
Having very wide boiling points

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Mass Transfer
Dew point of an air-water vapor mixture

At constant humidity & total pressure is fixed
Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve
Decreases with decrease in pressure
All of the listed here

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