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Mass Transfer

Mass Transfer
Danckwerts developed the __________ theory.

Penetration
Surface renewal
None of these
Film

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

Kissinevskii
Toor and Marchello
Danckwerts
Higbie

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Mass Transfer
Pick out the system with maximum boiling azeotrope at 1 atm.

Acetone chloroform
Ethyl alcohol-water
None of these
Benzene-ethyl alcohol

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Mass Transfer
Tea percolation employs

Liquid-liquid extraction
Absorption
Leaching
None of these

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Mass Transfer
The most economical range of absorption factor is

5 to 10
2 to 2.5
2.5 to 3
1.25 to 2

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Mass Transfer
Can a cooling tower cool water below the wet bulb temperature of inlet air?

No
Yes ; but height of cooling tower will be prohibitively high
Yes
Yes ; but the air flow rate should be excessively high

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