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UPCAT Science practice question 27: In a redox reaction, oxidation is defined as the

Correct answer

B. loss of electrons

Oxidation is loss and reduction is gain of electrons. The presence of oxygen is not required for a species to be oxidized.

In a redox reaction, oxidation is defined as the

  1. gain of electrons
  2. loss of electronsCorrect
  3. gain of protons
  4. loss of neutrons

Why B is correct

Oxidation is loss and reduction is gain of electrons. The presence of oxygen is not required for a species to be oxidized.

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