Chemical Process
Glycerine is recovered from lye by

Evaporation followed by vacuum distillation
Liquid extraction technique
None of these
Extractive distillation technique

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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)
Cause cholesterol build up and blood clotting
Are prone to rancid oxidation

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