Mass Transfer
At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.

Minimum
Total
Maximum permissible
Operating

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

One of the liquid components has very high affinity towards the solvent
Viscosity of liquid components is very high
One of the liquid components is heat sensitive
Extracting solvent is cheaply & abundantly available

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
In case of absorption with exothermic reaction, for fluids having

Pr = Sc; percentage change in heat and mass transfer flux will be the same for a given change in the degree of turbulence
Both A & B
Pr = Sc = 1; total mass, momentum and thermal diffusivity will be the same
Pr = Sc ; there won

ANSWER DOWNLOAD EXAMIANS APP