Mass Transfer
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

Increased reflux ratio
Greater degree of separation with a fixed number of trays
Increased reboiler load
None of these

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Mass Transfer
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because

Solubility of the components of air in water is very small
Lewis number is close to unity
Water has a high latent heat of evaporation
They are always equal under all circumstances

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Mass Transfer
In steam distillation, the

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

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