Mass Transfer
The wetted wall tower is used to determine

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

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Mass Transfer
In saturated gas, the

Vapour is in equilibrium with the liquid at the gas temperature
None of the listed here
Vapour is in equilibrium with the liquid at the room temperature
Partial pressure of vapour equals the vapour pressure of the liquid at room temperature

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Mass Transfer
Relative humidity is the ratio of the

Partial pressure of the vapour to the vapour pressure of the liquid at room temperature
Actual humidity to saturation humidity
None of these
Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature

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