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Mass Transfer

Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ D2
K ∝ √D
K ∝ D1.5
K ∝ D

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Mass Transfer
__________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation.

Benzol
Furfural
Butyl acetate
Hexane

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Mass Transfer
The Kundsen diffusivity is proportional to (where, T = absolute temperature)

√T
T
T²
T⁴

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Mass Transfer
'ADDUCTS' and 'CLATHRATES' are used in case of

None of these
Absorption
Crystallisation
Extractive distillation

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Mass Transfer
Unit of molal diffusivity is

Cm²/sec gm . mole
Gm moles/cm² . sec
Gm moles/cm. sec
Gm moles/cm². sec

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

Concentration
None of these
Nature of the constituents
Temperature and pressure

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MORE MCQ ON Mass Transfer

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