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Mass Transfer

Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

90
95
91.5
99

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Mass Transfer
Which of the following is not a batch drier?

Vacuum shelf drier
Truck drier
Fluidised bed drier
Agitated pan drier

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Mass Transfer
______ is the separation technique used for desalination of sea water.

Reverse osmosis
Absorption
Thermal diffusion
Adsorption

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Mass Transfer
Molecular diffusivity of a liquid

May increase or decrease with temperature
Decreases with temperature
Increases with temperature
Is independent of temperature

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Mass Transfer
Leaching of uranium ore and gold ore is done in

Pachuka tanks
None of these
Bollman extractor
Centrifugal extractor

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Mass Transfer
Batch tray dryers suffers from the disadvantage of

High labour cost & low heat economy
Non-uniform & low production rate
All of the listed here
High maintenance cost

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