Mass Transfer
Molecular diffusion is caused by the

Transfer of molecules from low concentration to high concentration region
Potential energy of the molecules
Thermal energy of the molecules
Activation energy of the molecules

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
Plate efficiency

Increases due to foaming
Increases due to liquid entrainment
Is a function of the mass transfer between liquid and vapour
Increases due to weeping and dumping of liquid

ANSWER DOWNLOAD EXAMIANS APP