Chemical Process
Hydrogenation of oil/fat does not

None of these
Raise its melting point
Improve its resistance to rancid oxidation
Remove double bonds

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Chemical Process
Reverse osmosis is normally used for the

Separation of isotopes of uranium from gaseous uranium hexaflouride
Purification of oxygen
Desalination of brackish water to produce potable (drinking) water
Separation of helium from natural gas

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Chemical Process
Use of hydrated lime in water treatment

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

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