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Mass Transfer

Mass Transfer
__________ developed the film theory.

Fick
Ergun
Higbie
Levenspeil

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Mass Transfer
Degree of freedom for leaching and solvent extraction process is

3
2
1

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Mass Transfer
In a moderately sized packed absorption tower, channeling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter

< 6:1
< 8 : 1
> 8:1
> 4 :1

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Mass Transfer
To remove all the moisture from a wet solid it requires exposure to __________ air.

High temperature
None of these
Highly humid
Perfectly dry

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Mass Transfer
Which one of the following devices is not used for both the absorption as well as the liquid-liquid extraction processes?

Packed towers
Wetted wall columns
Spray towers
Plate towers

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

1
> 1
< 1
0.5

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