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MASS TRANSFER

Mass Transfer
The vapour pressure exerted by the moisture contained in a wet solid depends upon the

Nature of the solid
Temperature
All of these
Nature of the moisture

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Decreases linearly
Remains unaffected
Decreases
Increases

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Mass Transfer
During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the

None of these
Liquid film
Gas film
Liquid-gas interface

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Mass Transfer
1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is

0.2
0.4
0.25
0.175

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Mass Transfer
Decoction refers to the use of solvent

At its boiling point
At ambient temperature
None of these
In its vapor form

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