Mass Transfer
The term "cooling range" in a cooling tower refers to the difference in the temperature of

Cold water leaving the tower and the wet bulb temperature of the surrounding air
Hot water entering the tower and the cooled water leaving the tower
None of the listed here
Hot water entering the tower and the wet bulb temperature of the surrounding air

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Mass Transfer
The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving force. and, Kp = M.T.C. for diffusion of a gas through a stagnant inert gas with pressure as driving force.)

Kc = Kp/RT = Km . RT/P
Kc = Kp . RT = Km . RT/p
Kc = Kp = Km
None of these

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Mass Transfer
In steam distillation, the

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

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