Mass Transfer
During the constant rate period of drying of a solid,

Increasing the air temperature decreases the drying rate
None of these
Surface evaporation of unbound moisture occurs
Increased air humidity decreases the rate of drying

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Mass Transfer
For absorbing a sparingly soluble gas in a liquid

Gas side mass transfer co-efficient should be increased
Liquid side mass transfer co-efficient should be decreased
Liquid side mass transfer co-efficient should be increased
Mass transfer co-efficient must be kept constant

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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,

All of these
As the acetone concentration increases, the solubility curves approach each other
Both the phases become identical at a particular common point on both the solubility curves called the plait point
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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