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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Percolation
Dissolution
Agitation and settling
Decoction

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Mass Transfer
The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called

Decoction
Percolation
Elutriation or elution
None of these

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

None of these
High temperature
Perfectly dry
Highly humid

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Mass Transfer
In a distillation column, with increase in the reflux ratio, the heat removed in the cooler

Increases
Remains unaffected
Decreases
And the heat required in reboiler decreases

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Mass Transfer
For a distillation column operating at minimum reflux, the

Concentration of liquid and vapour leaving a plate will be same
None of these
Number of plates required will be maximum
Reflux ratio will be maximum

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Mass Transfer
Make up water is supplied during cooling tower operation to compensate for water losses due to

All of these
Evaporation
Entrainment
Blowdown

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