Mass Transfer
In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg)

8.25
6.89
10
8.89

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because

Temperature is less
Saturated steam is used for steam distillation
Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition
Total pressure is less

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because

They are always equal under all circumstances
Solubility of the components of air in water is very small
Lewis number is close to unity
Water has a high latent heat of evaporation

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Mass Transfer