Question

how to find out that a reaction is a reduction reaction or Oxidation reaction​

Answer 1

Answer:

if the reaction shows removal of hydrogen or addition of oxygen it is a oxidation reaction .

if the reaction shows addition of hydrogen and removal of oxygen it is a reduction reaction .

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I hope this answers the question .

Answer 2

Answer:

oxidation number for two of the elements involved in the reaction. The oxidized element increases in oxidation number, while the reduced element decreases in oxidation number.