Mass Transfer
Ammonia present in the coke oven gas is removed by washing with

Dilute HCl
Dilute ammoniacal liquor
Caustic solution
Ethanolamine

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Mass Transfer
Pick out the wrong statement pertaining to leaching.

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
Door classifier can be used for leaching of coarse solids

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