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Mass Transfer

Mass Transfer
Leaching of coffee from coffee beans is done by

Dilute H₂SO₄ (hot)
Lime water
Hexane
Hot water

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Mass Transfer
As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages

Decrease
Increase
Can either increase or decrease, depends on the system
Remain unchanged

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Mass Transfer
Acetic acid will be most economically separated from a dilute solution of acetic acid in water by

Solvent extraction
Absorption
Continuous distillation
Evaporation

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Mass Transfer
Heat sensitive materials with very high latent heat of vaporisation may be economically separated using

Absorption
Evaporation
Liquid extraction
Distillation

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Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Equal to
More than
Twice
Half

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Mass Transfer
Alcohol is dehydrated using __________ distillation.

Steam
Molecular
Extractive
Azeotropic

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