Mass Transfer
The cooling effect in a cooling tower can not be increased by

Lowering the barometric pressure
Increasing the air velocity over the wet surfaces
None of these
Reducing the humidity of entering air

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Mass Transfer
Steam distillation is used to

Increase the efficiency of separation
Increase the total pressure of distillation
Reduce the number of plates
Avoid thermal decomposition of a component

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Mass Transfer
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

One of the liquid components has very high affinity towards the solvent
One of the liquid components is heat sensitive
Extracting solvent is cheaply & abundantly available
Viscosity of liquid components is very high

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