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Mass Transfer

Mass Transfer
A good solvent used for absorption should not have very high

Viscosity
Freezing point
Vapor pressure
All of these

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Mass Transfer
Absorption accompanied with chemical reaction is exemplified by the absorption of

Benzol present in coke oven gas by wash oil
SO₂ in alkaline solution
All of these
Ammonia in water

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Mass Transfer
For gas absorption, low viscosity solvents are preferred, because of their

Low pumping pressure drop
Better flow characteristics
All of these
Rapid absorption rates

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB according to the __________ theory.

Film
Penetration
None of these
Surface-renewal

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Mass Transfer
For a binary mixture with low relative volatility, continuous rectification to get pure products will require

Low reflux ratio
Less number of trays
Small cross-section column
High reflux ratio

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Mass Transfer
The binary diffusivity in gases and liquids vary respectively as

T3/2 and √T
T3/2 and T
T and T3/2
√T and T3/2

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