Chemical Process
In the Solvay process, the product from the calciner is

Light soda ash
Sodium bicarbonate
Dehydrated soda ash
Dense soda ash

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Chemical Process
Pasteurisation of milk means

Inhibiting the growth of micro-organisms without killing them
None of these
Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics
Removal of fatty and albuminous substance from it

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Chemical Process
Use of hydrated lime in water treatment

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

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