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Mass Transfer

Mass Transfer
According to Chilton-Colburn analogy for mass transfer, NSt.NSc2/3 is equal to

F
1/f
F/2
2f

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Mass Transfer
Smoke is an example of

Gas dispersed in liquid
Liquid dispersed in gas
Solid dispersed in liquid
Solid dispersed in gas

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Mass Transfer
During sensible cooling process

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

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Mass Transfer
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Is same as
Is greater than
Is lower than
Cannot be predicted as data are insufficient

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Mass Transfer
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams

Decreases
Increases
Passes through a maximum
Remains unaffected

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Mass Transfer
Dorr thickener is an equipment used for

Clarification
Leaching
Sedimentation
Classification

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