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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Clarification
Classification
Sedimentation
Leaching

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Mass Transfer
Absorption factor method is used to calculate the number of ideal stages, when

Operating line lies above the equilibrium line
Pressure drop in the column is very high
Operating line lies below the equilibrium line
Both operating and equilibrium lines are parallel

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Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

Induced
Forced
Natural
None of these

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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
None of these
Heat of wetting
Differential heat of adsorption

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

10 metres above ground
At ground level
5 metres above ground
2 metres above the ground

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Mass Transfer
__________ equation applies to diffusivities in liquids.

Hirschfelder
Gilliland
None of these
Wilke and Chang

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