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Mass Transfer

Mass Transfer
For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of H₂/ky.Cz is around

0.24
0.72
0.6
1

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Stanton
Peclet
Schmidt
Sherwood

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

70-80
90-100
44119
30-40

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Mass Transfer
__________ extractor is used for the concentration of radioactive nuclear waste.

None of the listed here
Seive plate
Pulsed column
Mixer-settler

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Mass Transfer
Use of packed towers for distillation is generally limited to the

High pressure operation
Vacuum distillation
Small sizes
Multicomponent distillation

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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

Percolation
None of these
Decoction
Elutriation or elution

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