Mass Transfer MCQs

The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m²/m³)

If the amount of the steam used in steam distillation is increased, the temperature of distillation

Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

Desulphurisation of petrol is done in a

During constant rate period, the rate of drying decreases with the

Adsorption is an unit operation which generally involves __________ systems.

Leaching rate is independent of the

In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m² and the solvent flow, rate is 400 moles of S/m².hr. The equilibrium data is represented by Y = 3X², where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is