Mass Transfer
Which of the following equipments is not used for gas dispersion?

Bubble cap tray towers
Spray towers
Agitated vessels
Perforated sieve tray towers

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Mass Transfer
Dew point of an air-water vapor mixture

At constant humidity & total pressure is fixed
All of the listed here
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

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