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Mass Transfer

Mass Transfer
Pore size of the molecular seive 5A is __________ mm.

0.5
5
50
0.05

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Mass Transfer
Dry bulb temperature of unsaturated air is more than its __________ temperature.

Dew point
Neither A nor B
Both A & B
Wet bulb

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Mass Transfer
Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as

K ∝ √D
K ∝ D2
K ∝ D
K ∝ D1.5

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Mass Transfer
Leaching of sugar from sugar beets is done by

Hot water
Hexane
Lime water
Dilute H₂SO₄

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Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

0.1
0.01
10-5 to 10-6
> 1

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Mass Transfer
The operating cost of a distillation column at minimum reflux ratio is

Maximum
Infinite
Zero
Minimum

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