Chemical Process
A substance produced by a living organism and capable of anti-microbial activity is called a/an

Antiseptic
Antibiotic
Disinfectant
None of these

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Chemical Process
Use of hydrated lime in water treatment

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

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