Chemical Process
Builders are added in soap to act as

Corrosion inhibitor
Anti-redeposition agent
Cleaning power booster
Fabric brightener

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Chemical Process
Use of hydrated lime in water treatment

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

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