Mass Transfer
If a two phase system is in physical equilibrium; then it means that, the

All of these
Temperature of the liquid phase is equal to that of the vapor phase
Total pressure throughout the liquid phase is equal to that throughout the vapor phase
Escaping tendency of each component from the liquid phase to the vapor phase is exactly equal to that from vapor phase to liquid phase

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
In an operating distillation column, the

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

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when

Only liquid phase obeys Dalton's law
Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law
Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law
Only vapor phase follows Raoult's law

ANSWER DOWNLOAD EXAMIANS APP