Mass Transfer
Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent?

Cooling and dehumidification
None of these
Dehumidification with dry bulb temperature remaining constant
Heating and dehumidification at almost constant wet bulb temperature

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Mass Transfer
Priming in a distillation column

Reduces the overall pressure drop
Results from very low gas velocity
Is characterised by the presence of foam throughout the space between trays
Is desirable from point efficiency consideration

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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,

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
All of these
Both the phases become identical at a particular common point on both the solubility curves called the plait point

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