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Mass Transfer

Mass Transfer
In liquid-liquid extraction, the number of phases at plait point is

2
4
3
1

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Mass Transfer
Back-trapping in a distillation column

Increases tray efficiency
Decreases tray efficiency
Reduces pressure drop
Is desirable, as it provides improved vapour-liquid contact

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Mass Transfer
Mass transfer co-efficient is defined as

None of the listed here
Co-efficient = Flux/concentration difference
Flux=concentration difference/co-effi-cient
Flux = Co-efficient/concentration difference

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Mass Transfer
When the feed to a distillation column is a saturated liquid, slope of the feed line is

None of these
Unity
Infinity
Zero

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Mass Transfer
The recovery of pencillin from the acidified fermentation broth is done by

Liquid extraction
Absorption
Evaporation
Distillation

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Mass Transfer
Flash distillation is suitable for the separation of components

Which form maximum boiling azeotrope
Having very wide boiling points
Which form minimum boiling azeotrope
Having very close boiling points

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