Mass Transfer
In case of an absorber, the operating

Line always lies below the equilibrium curve
Velocity is more than the loading velocity
Line always lies above the equilibrium curve
Line can be either above or below the equilibrium curve

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

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

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
Henry's law states that the

Partial pressure of a component over a solution is proportional to its mole fraction in the liquid
Partial pressure of a component over a solution is proportional to the mole fraction in the vapour
Partial pressure is equal to the product of the mole fraction and total pressure
Vapour pressure is equal to the product of the mole fraction and total pressure

ANSWER DOWNLOAD EXAMIANS APP