Mass Transfer Objective Questions and Answers

463. If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are

464. Which of the following is the most commonly used leaching solvent in vegetable oil industry?

A. Phenol

465. Under conditions of flooding in packed tower, the gas pressure drop

466. __________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.

467. 1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is

468. As the reflux ratio in a distillation coloumn is increased from the minimum, the

A. Slope of the operating line in stripping section decreases

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

C. Total cost first decreases and then increases

D. Liquid flow increases while the vapor flow decreases for a system

Discussion

469. Unit operation involved in the prilling of urea is

Mass Transfer MCQs