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Mass Transfer

Mass Transfer
Tea percolation employs

Absorption
Leaching
Liquid-liquid extraction
None of these

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Mass Transfer
In case of non-ideal gases and liquids, the molal diffusivity

Is equal to the volumetric diffusivity
Is independent of pressure
Varies directly as the pressure
Varies inversely as the pressure

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Mass Transfer
Molecular distillation is

High temperature distillation
Both B and C
Very low pressure distillation
For heat-sensitive materials

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Mass Transfer
The commonly used solvent in supercritical extraction is

Carbon dioxide
Carbon tetrachloride
Water
Methyl ethyl ketone

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Mass Transfer
To remove all the moisture from a wet solid it requires exposure to __________ air.

High temperature
Highly humid
Perfectly dry
None of these

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Mass Transfer
For a distillation column operating at minimum reflux, the

Concentration of liquid and vapour leaving a plate will be same
Number of plates required will be maximum
Reflux ratio will be maximum
None of these

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