Mass Transfer MCQs

Elution

Osmosis

Reverse osmosis

Sublimation

Using higher reflux ratio

Use of increased tray spacing

Increasing the liquid flow rate

Increasing the vapour flow rate

Reducing the total pressure

Increasing the total pressure

Reducing the temperature

Both B and C

Long tube

Short tube

Vacuum

Falling film

Only one component

Two components

Any number of components

Only saturated liquid

Festoon

Cylinder

Conveyor

Tunnel

The water entrained by the circulating air

Dependent on the water lost by evaporation

Desirable

All of the above

Slope of the operating line in stripping section decreases

Number of plates decreases very slowly first and then more and more rapidly

Total cost first decreases and then increases

Liquid flow increases while the vapor flow decreases for a system

Electrical resistance

Thermal conductivity

Strength

None of these

Flash vaporisation

Extractive distillation

Solvent extraction

Ordinary distillation