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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.

Durability
Cost
Porosity
Size

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Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

Kissinevskii
Higbie
Danckwerts
Toor and Marchello

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Mass Transfer
__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.

Dry bulb
None of these
Wet bulb
Dew point

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Mass Transfer
A slurry is to be dried to produce flaky solid. Which dryer would you recommend?

Rotary dryer
Dielectric dryer
Spray dryer
Drum dryer

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Mass Transfer
The unit of volumetric diffusivity is

Cm²/sec
Cm/sec
Cm³/sec
Cm²/seC₂

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Mass Transfer
When a multistage tray tower uses a minimum reflux ratio, it implies

Infinite trays and minimum reboiler heat load
Infinite trays and maximum reboiler heat load
Minimum trays and maximum reboiler heat load
Minimum trays and minimum reboiler heat load

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