Mass Transfer
As the reflux ratio in a distillation coloumn is increased from the minimum, the

Slope of the operating line in stripping section decreases
Number of plates decreases very slowly first and then more and more rapidly
Total cost first decreases and then increases
Liquid flow increases while the vapor flow decreases for a system

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Mass Transfer
Heat load in a cooling tower

Neither A nor B
Is equal to the number of kg, of water circulated times the cooling range
Both A & B
Means the amount of heat thrown away (KCal/hr.) by the cooling tower

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