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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Leaching
Clarification
Classification
Sedimentation

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Mass Transfer
Mass transfer co-efficient of liquid is

Affected more by temperature than that for gases
None of these
Affected much less by temperature than that for gases
Not affected by the temperature

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Mass Transfer
In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve)

Remains unchanged
None of these
Decreases
Increases

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Mass Transfer
The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the

Integral heat of adsorption
Differential heat of adsorption
Heat of wetting
None of these

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

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

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Mass Transfer
With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency

May increase or decrease ; depends on individual design
Increases
Decreases
Remains same

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