Question

what is hyrogination?

Answer 1

Hydrogenation is a chemical reaction -- widely used in the processing of cooking oils and fats -- that turns unsaturated fatty acids into saturated ones. Technically speaking, during this process unsaturated bonds between carbon atoms are reduced by attaching a hydrogen atom to each carbon.
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Answer 2

actually It is Hydrogenation in which compound or element treated with molecular hydrogen usually in the presence of palladium,nickel,platinum etc