Chemical Process
Presence of sodium tripolyphosphate (an additive) in synthetic detergent

Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
Inhibits its corrosive effects
None of these
Does not allow redeposition of dirt on the cleaned surface

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

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

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