Mass Transfer
Inside the distillation column, the

Liquids are not always at their bubble points
Pressure increases gradually from bottom to the top of the column
None of these
Driving force for the vapour flow is the pressure drop

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Mass Transfer
Pick out the wrong statement pertaining to leaching.

Fine solids can not be leached in a Pachuka tank
Vegetable seeds can be leached in either of Bollman extractor, Rotocel or Kennedy extractor
Door classifier can be used for leaching of coarse solids
Very high temperature is not needed for the leaching of sugar beet

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