Mass Transfer
Swenson-Walker crystalliser is a __________ unit

Cooling (adiabatic)-cum-evaporation
Continuous
Semi-batch
Batch

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
In a counter-current liquid extractor

Both liquids flow at fixed rate
Only one of the liquids may be pumped at any desired rate
Both liquids can have any desired flow rate
Liquid's flow rate depends upon the temperature and pressure

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
In an operating distillation column, the

Vapors and liquids are at their dew point and bubble point respectively
Driving force for the liquid flow is its specific weight
Driving force for the vapor flow is the pressure drop, as the pressure decreases gradually from the bottom to the top of the column
Highest temperature is encountered at the top of the column

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
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

0.5
0.7
0.25
0.9

ANSWER DOWNLOAD EXAMIANS APP