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Mass Transfer

Mass Transfer
Leaching of coffee from coffee beans is done by

Lime water
Hexane
Hot water
Dilute H₂SO₄ (hot)

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Mass Transfer
Steam distillation is used for separation of high boiling

Both of the options given here
Volatile impurity from still higher boiling substances
none of the listed here
Substances from non-volatile impurities

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Mass Transfer
Low viscosity absorbent is preferred for reasons of

Improved flooding characteristics
All of these
Rapid absorption rates and good heat transfer characteristics
Low pressure drop on pumping

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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
Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time)

(De.t)1/2
(4De/t)
(4De/πt)1/2
(De/t)1/2

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Mass Transfer
Smoke is an example of

Liquid dispersed in gas
Solid dispersed in gas
Gas dispersed in liquid
Solid dispersed in liquid

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