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Mass Transfer

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

Unity
Zero
Infinity
None of these

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Mass Transfer
Antibiotics are best handled in a

Sieve tray contractor
Podbielniak extractor
Pulsed column extractor
Rotating disc contactor

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

Evaporation
Distillation
Absorption
Liquid extraction

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Mass Transfer
Mass transfer co-efficient is defined as

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

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Mass Transfer
Drying operation under vacuum is carried out to

Reduce drying temperature
Increase drying temperature
Dry materials having high bound moisture content
Dry those materials which have very high unbound mositure content

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Mass Transfer
The cooling effect in a cooling tower can not be increased by

Increasing the air velocity over the wet surfaces
Lowering the barometric pressure
Reducing the humidity of entering air
None of these

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