Mass Transfer
Smoke is an example of

Gas dispersed in liquid
Liquid dispersed in gas
Solid dispersed in gas
Solid dispersed in liquid

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Mass Transfer
Pick out the wrong statement pertaining to leaching.

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

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Mass Transfer
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because

Lewis number is close to unity
They are always equal under all circumstances
Solubility of the components of air in water is very small
Water has a high latent heat of evaporation

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