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Mass Transfer

Mass Transfer
The value of NA/(NA + NB) for steady state molecular diffusion of gas 'A' through non-diffusing gas 'B' is

∞
2
0.5
1

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Mass Transfer
Which of the following is the most suitable for extraction in a system having very low density difference?

Pulsed extractor
Packed extraction tower
Mixer-settler extractor
Centrifugal extractor

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Mass Transfer
In the desorption of highly soluble gas from the liquid, the main resistance will be in the __________ phase.

Gas
Both A & B
Neither A nor B
Liquid

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Mass Transfer
Water entrained by circulating air in cooling towers is termed as

Vapor load
Drift
Blow down
None of the listed here

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Mass Transfer
Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method?

Total condenser
Reboiler
Partial condenser
Both B and C

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

Ethyl alcohol-water
Hydrochloric acid-water
All of these
Benzene-toluene

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