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Mass Transfer

Mass Transfer
At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes

None of these
?
1

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Mass Transfer
Steady state equimolal counter diffusion occurs in case of

Leaching
Liquid-liquid extraction
Binary phase distillation
Absorption

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Mass Transfer
The solvent used in liquid-liquid extraction should have __________ less than one.

Selectivity
Both A & B
Distribution co-efficient
Neither A nor B

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

D1.5
D
1/D
D0.5

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Mass Transfer
In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve)

Decreases
Remains unchanged
Increases
None of these

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Mass Transfer
In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as

Ri = Re
Ri = (1 - Re)/Re
Ri = Re/(1 + Re)
Ri = Re/(1 - Re)

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