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Mass Transfer

Mass Transfer
__________ equation applies to diffusivities in liquids.

Wilke and Chang
None of these
Hirschfelder
Gilliland

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Mass Transfer
Which of the following is not fixed by the process requirements, in the design of absorbers?

Terminal concentrations of gas stream
None of these
Flow rate of the entering gas
Composition of the entering liquid

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Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

2.5 to 3.5
1.25 to 2.0
0.5 to 0.8
0.8 to 1.2

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Mass Transfer
During sensible cooling process

Wet bulb temperature decreases
Both B and C
Relative humidity decreases
Relative humidity increases

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Mass Transfer
The film penetration model of mass transfer was enunciated by

Fick
Gilliland
Stefan
Toor and Marchello

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Mass Transfer
The percentage humidity is less than the relative humidity only at __________ percent humidity.

None of these
Both zero and hundred
Zero
Hundred

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