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Mass Transfer

Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Freeze
Drun
Rotary
Cylinder

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Mass Transfer
Degree of freedom for leaching and solvent extraction process is

1
2
3

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Mass Transfer
In a counter-current extractor, as the axial mixing increases, the extraction efficiency

Remains unchanged
Decreases
Depends on the pressure of the system
Increases

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Mass Transfer
Absorption factor is defined as (where, S₁ = slope of the operating line S₂ = slope of the equilibrium curve)

S₁/S₂
S₁ - S₂
S₁ x S₂
S₂/S₁

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

Both A & B
Liquid
Neither A nor B
Gas

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Mass Transfer
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

(G.a)/FG
L/(FG.G)
FG/(G.a)
F/(FG.a)

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