Mass Transfer
The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the

Pressure falls
Temperature falls
Temperature rises
Pressure rises

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
To get high tray efficiency

Time of contact between the two phases should be less
Interfacial surface between liquid and gas phase should be large
Gas velocity should be very low
Liquid entrainment should be severe

ANSWER DOWNLOAD EXAMIANS APP