Mass Transfer
In case of non-ideal gases and liquids, the molal diffusivity

Varies directly as the pressure
Is independent of pressure
Varies inversely as the pressure
Is equal to the volumetric diffusivity

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
Priming in a distillation column

Is desirable from point efficiency consideration
Results from very low gas velocity
Reduces the overall pressure drop
Is characterised by the presence of foam throughout the space between trays

ANSWER DOWNLOAD EXAMIANS APP