Mass Transfer MCQs

Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (y_in = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is: N + 2 = 6 log $$\left( {\frac{{{{\text{y}}_{{\text{in}}}}}}{{{{\text{y}}_{{\text{out}}}}}}} \right).$$
For 98% recovery of acetone, the number of trays required is/are

Steam distillation is used for separation of high boiling

Molecular distillation is

An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is

In azeotropic mixture, the equilibrium vapour composition is

Rayleigh's equation applies to __________ distillation.

Relative humidity is the ratio of the

Mechanism of moisture removal in case of freeze drying of food stuff is by

Which of the following is used for the concentration of rubber latex?