Mass Transfer
With increase in temperature, the leaching rate increases because of the

None of the listed here
Both Decreased viscosity of liquid & Increased diffusivity
Increased diffusivity
Decreased viscosity of liquid

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Mass Transfer
Plate efficiency

Is a function of the mass transfer between liquid and vapour
Increases due to liquid entrainment
Increases due to weeping and dumping of liquid
Increases due to foaming

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