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Mass Transfer

Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Freeze
Drun
Rotary
Cylinder

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Mass Transfer
Large scale usage of flash distillation is practised in

Polymerisation industry
Petroleum refinning
Ammonia synthesis plant
Soap manufacturing

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Mass Transfer
For a binary mixture with low relative volatility, continuous rectification to get pure products will require

Less number of trays
High reflux ratio
Small cross-section column
Low reflux ratio

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Mass Transfer
Steady state equimolal counter diffusion occurs in case of

Absorption
Leaching
Liquid-liquid extraction
Binary phase distillation

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Mass Transfer
Leaching of coffee from coffee beans is done by

Hexane
Lime water
Dilute H₂SO₄ (hot)
Hot water

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Mass Transfer
The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is

D/a
Proportional to √D
D/2a
Dependent on the Reynolds number

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