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Mass Transfer

Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re
Re0.83
Re0.33
Re0.53

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Decreases linearly
Increases
Remains unaffected
Decreases

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

2 metres above the ground
5 metres above ground
At ground level
10 metres above ground

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Mass Transfer
__________ developed the film theory.

Higbie
Fick
Ergun
Levenspeil

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Mass Transfer
Raschig ring made of procelain cannot be used for treating concentrated

Sulphuric acid
Hydrochloric acid
Alkalis
Nitric acid

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Mass Transfer
Separation of two or more components of a liquid solution can not be achieved by

Absorption
Evaporation
Fractional crystallisation
Liquid extraction

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