Mass Transfer
When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system,

Both the phases become identical at a particular common point on both the solubility curves called the plait point
As the acetone concentration increases, the solubility curves approach each other
All of these
The distribution curve which is a plot between x (acetone concentration in one phase) and y (acetone concentration in other phase) is analogous to x-y curve used in distillation and absorption termina

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Mass Transfer
In case of an absorber, the operating

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

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Mass Transfer
Relative humidity is the ratio of the

Actual humidity to saturation humidity
None of these
Partial pressure of the vapour to the vapour pressure of the liquid at room temperature
Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature

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