Chemical Process
Rosin soap is added during paper manufacture to

Impart adhesive properties
None of these
Improve opacity
Impart resistance to penetration by liquids

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Chemical Process
Use of hydrated lime in water treatment

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

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