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Mass Transfer

Mass Transfer
Berl saddle made of carbon cannot be used for

Oxidising atmosphere
Alkalis
H₂SO₄
SO₂

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Mass Transfer
As per Gilliland's equation, the diffusivity is

Inversely proportional to 'P'
Directly proportional to 'T1.5'
All of these
Dependent on the molecular volume & molecular weight of components

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Mass Transfer
The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line)

LG/m
ML/G
L/mG
G/mL

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Mass Transfer
In a binary system, separation is very efficient, when the relative volatility is

< 1
0.5
1
> 1

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Mass Transfer
When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.

Same as
Always lower than
Dependent on the system; can be either lower or higher than
Always higher than

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Mass Transfer
Separation of two volatile liquids by distillation makes use of their

Relative volatility
Density difference
Selectivity
Solubility

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