Mass Transfer
Can a cooling tower cool water below the wet bulb temperature of inlet air?

Yes ; but height of cooling tower will be prohibitively high
No
Yes ; but the air flow rate should be excessively high
Yes

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Mass Transfer
The wetted wall tower is used to determine

M.T.C. of liquid in liquid-gas system
The overall M.T.C. of the system
Individual mass transfer co-efficient (M.T.C.) in gaseous system
M.T.C. of individual components in a liquid-liquid system

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