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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
Liquid diffusivity is of the order of __________ cm² /second.

> 1
0.01
10-5 to 10-6
0.1

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q = 0
q < 1
q > 1
q = 1

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Mass Transfer
Which of the following unit operations makes use of Thiele-Geddes equation?

Multicomponent distillation
Solid-liquid extraction
Multicomponent absorption with chemical reaction
Liquid-liquid extraction

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Mass Transfer
In which of the following unit operations, the selectivity is an important parameter?

Absorption
Solvent extraction
Distillation
None of these

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Mass Transfer
Stefan's law describes the mass transfer by

Diffusion
Neither A nor B
Bulk flow
Both A & B

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