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Mass Transfer

Mass Transfer
The-relative volatility for separation of a non-ideal binary mixture by distillation should be

1
< 1
> 1

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Mass Transfer
In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the

Temperature and pressure
None of these
Concentration
Nature of the constituents

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

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Mass Transfer
Rotary dryers cannot handle __________ materials.

Grannular
Sticky
Free flowing
Dry

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Mass Transfer
Antibiotics are best handled in a

Sieve tray contractor
Pulsed column extractor
Rotating disc contactor
Podbielniak extractor

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Mass Transfer
Leaching of coarse solid lumps is also termed as

Decoction
Percolation
Agitation and settling
Dissolution

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