Chemical Process
Pasteurisation of milk means

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

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Chemical Process
Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils

Are prone to rancid oxidation
Have affinity to retain harmful sulphur compounds
Cause cholesterol build up and blood clotting
Always contain some amount of nickel (as their complete removal is very difficult)

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