Mass Transfer
In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Condenser and reboiler loads are the same in both the cases
Condenser load is the same in both the cases but reboiler load is higher in case (ii)
Both condensor and reboiler loads are higher in case (ii) as compared to case (i)
Reboiler load is the same in both the cases but condenser load is higher in case (ii)

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Mass Transfer
Dew point of an air-water vapor mixture

All of the listed here
At constant humidity & total pressure is fixed
Decreases with decrease in pressure
Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve

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Mass Transfer
In case of a desorber (stripper), the

Operating line always lies above the equilibrium curve
Temperature always increases
Temperature remains unaffected
Operating line always lies below the equilibrium curve

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