Which of the following chemical equations represents an oxidation-reduction reaction?

A. Mg(OH)2 + 2HCl →MgCl2 + 2H2O
B. BiCl2 + Na2SO4 →2NaCl + BiSO4
C. CH4 + 2O2→CO2 + 2H2O
D. 3NaOH + H3PO4→Na3PO4 + 3H2O

Answer :

C. Represents an oxidation-reduction reaction

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