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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Decoction
Agitation and settling
Dissolution
Percolation

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Mass Transfer
The most economical range of absorption factor is

5 to 10
1.25 to 2
2 to 2.5
2.5 to 3

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Mass Transfer
Which of the following binary systems is an example of a maximum boiling azeotrope?

None of the listed here
Water-hydrochloric acid
Water-ethyl alcohol
Acetone-carbon disulphide

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Mass Transfer
At a fixed total pressure, humidity depends only on the

Heat capacity of the vapour
Density of the vapour
None of these
Partial pressure of vapour in the mixture

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Mass Transfer
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is

Induced draft cooling tower
Spray chamber
None of these
Natural draft cooling tower

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

Known
Unknown
Calculated
Not required

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