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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Sedimentation
Clarification
Leaching
Classification

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Mass Transfer
Mass transfer co-efficient is defined as

Co-efficient = Flux/concentration difference
Flux = Co-efficient/concentration difference
Flux=concentration difference/co-effi-cient
None of the listed here

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Mass Transfer
Absorption accompanied by heat evolution results in

Decrease in equilibrium solubility
None of these
Increase in equilibrium solubility
Increased capacity of the absorber

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Mass Transfer
Desirable value of absorption factor in an absorber is

0.5
> 1
< 1
1

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Mass Transfer
Mass transfer co-efficient of liquid is

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

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Mass Transfer
Removal of __________ exemplifies an adsorption unit operation.

Uranium from its ore
Ammonia from coke oven gas
Water from petrol
None of the listed here

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