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Mass Transfer

Mass Transfer
The process employing desorption of the absorbed solute by a solvent is called

Reverse osmosis
Osmosis
Elution
Sublimation

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Mass Transfer
In distillation, overhead product contains

Any number of components
Only one component
Only saturated liquid
Two components

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Mass Transfer
Flooding in a column results due to

High temperature
Low velocity of the liquid
High pressure drop
Low pressure drop

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Mass Transfer
In which of the following unit operations, the selectivity is an important parameter?

Distillation
Solvent extraction
None of these
Absorption

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Mass Transfer
A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is

1.94
0.54
1.24
1.04

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Mass Transfer
Occurrence of 'case hardening' during drying of a high moisture solid cake __________ the drying rate.

Does not affect
Decreases
Exponentially increases
Increases

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