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Mass Transfer

Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

Kissinevskii
Danckwerts
Toor and Marchello
Higbie

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Mass Transfer
For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

Known
Not required
Unknown
Calculated

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Mass Transfer
Large scale drying of wheat is done in a __________ dryer.

Tray
Spouted bed
Vacuum rotary
Fluidised bed

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Mass Transfer
Perforated plate towers are unique for solvent extraction because, they provide

Repeated coalescence & redispersion of the drop phase
Better contact of the phase
None of these
Higher contact area

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Mass Transfer
The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

5
100
1
10

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Mass Transfer
The film penetration model of mass transfer was enunciated by

Fick
Gilliland
Toor and Marchello
Stefan

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