Chemistry
Define:
(a) catalytic hydrogenation
(b) oxidation
(c) reduction
(d) redox reaction
Hydrogen
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Answer
(a) Catalytic hydrogenation is a process by which hydrogen gas is passed through vegetable oils in the presence of a catalyst like Ni, Pt or Pd to convert the oils into vanaspati ghee.
(b) Oxidation is a chemical process that involves addition of oxygen to a substance or removal of hydrogen from a substance.
(c) Reduction is a chemical process that involves addition of hydrogen to a substance or removal of oxygen from a substance.
(d) Redox reactions are those in which reduction and oxidation both take place simultaneously i.e., one substance is reduced while the other gets oxidized.
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