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Mass Transfer

Mass Transfer
Rate of leaching increases with increasing

Temperature
Pressure
Size of the solid
Viscosity of solvent

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Mass Transfer
Large scale usage of flash distillation is practised in

Soap manufacturing
Ammonia synthesis plant
Polymerisation industry
Petroleum refinning

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Mass Transfer
Make up water is required in a cooling tower to replace the water lost by

Blowdown and leakage
Drift
Evaporation
All of these

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Mass Transfer
Stage efficiency in a leaching process depends on the

Time of contact between the solid and the solution
Both A & B
Rate of diffusion of the solute through the solid and into the liquid
Vapour pressure of the solution

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Mass Transfer
The Hatta number is important in

Gas absorption with chemical reaction
Binary distillation
Multicomponent distillation
Gas absorption without chemical reaction

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Mass Transfer
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams

Remains unaffected
Increases
Decreases
Passes through a maximum

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