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Mass Transfer

Mass Transfer
Surface renewal model of mass transfer was enunciated by

Fick
Stefan
Toor and Marchello
Danckwerts

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Mass Transfer
Which of the following provides maximum contact surface for a liquid-vapour system?

Seive-plate column
Bubble-cap plate column
Packed tower
Wetted wall column

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Mass Transfer
For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will

Remain same
Increase
Decrease
Data insufficient, can't be predicted

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

None of these
Perfectly dry
Highly humid
High temperature

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Mass Transfer
Cox chart is useful in the design of

Distillation column
Dryer
Crystalliser
Evaporator

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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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