Mass Transfer
Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

Large number of trays
Decreased solute solubility
All of these
Large minimum liquid to gas (L/G) ratio

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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

Viscosity of liquid components is very high
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

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Mass Transfer
Heat load in a cooling tower

Neither A nor B
Means the amount of heat thrown away (KCal/hr.) by the cooling tower
Both A & B
Is equal to the number of kg, of water circulated times the cooling range

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