Mass Transfer
For the flow of gases through a capillary, with increase in temperature, the permeability __________ as per Knudsen law.

Increases
Remains same
Decreases
Either A or B; depends on the gas

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Mass Transfer
Blowdown in a cooling tower

Increases the scale forming tendencies of water
Is undesirable
Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities
All of these

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Mass Transfer
In steam distillation, the

Temperature is 100°C
Temperature is more than 100° C
Temperature is higher than the boiling point of either component
Product must be immiscible with water

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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
All of these
As the acetone concentration increases, the solubility curves approach each other
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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