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Mass Transfer

Mass Transfer
__________ equation applies to diffusivities in liquids.

Gilliland
None of these
Wilke and Chang
Hirschfelder

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Mass Transfer
For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be

2
3
1

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Mass Transfer
The most common packing used in industrial operations is __________ rings.

Lessing
Cross-partition
Single spiral
Raschig

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

None of the listed here
Vapor load
Drift
Blow down

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Mass Transfer
Inside the distillation columns, the

Driving force for the liquid flow is its weight
Vapors are not always at their dew points
All of these
Highest temperatures is near the feed plate

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Mass Transfer
The diffusivity (D) in a binary gas mixture is related to the pressure (P) as

D ∝ 1/P0.5
D ∝ P0.5
D ∝ 1/P
D ∝ 1/P1.5

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