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Mass Transfer

Mass Transfer
The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line)

L/mG
G/mL
LG/m
ML/G

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Mass Transfer
All moisture in a non-hygroscopic material is the __________ moisture.

Bound
Free
Equilibrium
Unbound

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Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

10-5 to 10-6
> 1
0.1
0.01

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

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

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Mass Transfer
A good solvent used for absorption should not have very high

All of these
Viscosity
Vapor pressure
Freezing point

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

90-100
70-80
44119
30-40

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