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Mass Transfer

Mass Transfer
Deairation (removal of O₂) of water is done by

Ion-exchange
Rectification
Adsorption
Absorption

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Greater than
Equal to
Smaller than
Either A, or B ; depends on the type of packing

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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
Decoction
None of these
Elutriation or elution

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Mass Transfer
Molecular seives are regenerated by heating to __________ °C.

> 500
< 150
200-330
> 1000

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Mass Transfer
Leaching rate is independent of the

Agitation
None of the listed here
Temperature
Particle size

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Mass Transfer
Which of the following is a suitable absorbent for removal of H₂S from natural gas?

Hot water
Vetrocoke solution
Monoethanol amine (MEA)
Dilute

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