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Mass Transfer

Mass Transfer
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.

Porosity
Durability
Cost
Size

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Mass Transfer
Pore size of the molecular seive 5A is __________ mm.

50
0.05
5
0.5

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Mass Transfer
Radioactive nuclear waste is treated in

Bollman extractor
Pulsed column extractor
Rotating-disc contactor
Mixer-settler extractor

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Mass Transfer
Make up water is supplied during cooling tower operation to compensate for water losses due to

All of these
Entrainment
Blowdown
Evaporation

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Mass Transfer
Acetic acid will be most economically separated from a dilute solution of acetic acid in water by

Solvent extraction
Continuous distillation
Evaporation
Absorption

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Mass Transfer
The unit of volumetric diffusivity is

Cm²/seC₂
Cm³/sec
Cm/sec
Cm²/sec

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