Mass Transfer
Pick out the wrong statement pertaining to leaching.

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

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Mass Transfer
In case of a desorber (stripper), the

Operating line always lies above the equilibrium curve
Operating line always lies below the equilibrium curve
Temperature remains unaffected
Temperature always increases

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Mass Transfer
Dew point of an air-water vapor mixture

Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve
Decreases with decrease in pressure
All of the listed here
At constant humidity & total pressure is fixed

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