Chemical Process
Use of hydrated lime in water treatment

After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂
All of these
Before filtration, reduces the bacterial load on filters
Is to adjust the pH value

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Chemical Process
Shaving soaps are

High free alkali soaps having excess of cane sugar and alcohol
Soft potassium soaps (potassium salt of fatty acid) with free stearic acid to give lather a lasting property
Metalic soaps compounded with frothing agents
None of these

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