Mass Transfer
The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

Remains same
Increase
Depend on saturated boiling point; may increase or decrease
Decrease

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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?

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

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