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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Sedimentation
Leaching
Classification
Clarification

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Mass Transfer
Large scale drying of sugar is done in a __________ dryer.

Tray
Rotary
Spouted bed
Truck

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

0.1
0.01
> 1
10-5 to 10-6

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Mass Transfer
With increase in temperature, the mutual solubility of two liquids

Decreases
Decreases exponentially
Remains unchanged
Increases

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Mass Transfer
Solvent used in extractive distillation

Forms a high boiling azeotrope
Does not alter the relative volatility of the original components
Forms a low boiling azeotrope
Is of low volatility

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Mass Transfer
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

Increased reflux ratio
Increased reboiler load
None of these
Greater degree of separation with a fixed number of trays

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