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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Leaching
Sedimentation
Classification
Clarification

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Mass Transfer
For which of the following unit operations, Lewis number is of significance?

Binary distillation
Gas absorption
Adsorption
Humidification

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Mass Transfer
In rectifying section of a continuous distillation column, the

None of these
Liquid is stripped of high boilers
Vapour is enriched with low boilers
Vapour is enriched with high boilers

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Mass Transfer
The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called

Decoction
Elutriation or elution
None of these
Percolation

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Mass Transfer
At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is __________ percent.

100
50
Between 0 and 100

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Mass Transfer
__________ column is used in gas absorption process.

Seive/perforated tray
Packed
Bubble cap
Wetted wall

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