Which of the Following Reactions Is an Oxidation-Reduction Reaction

question 63

Multiple Choice

Which of the following reactions is an oxidation-reduction reaction?

• A)CaCO₃(s)+ 2HCl(aq)→ CaCl₂(aq)+ H₂O(l)+ CO₂(g)
• B)NH₄NO₃(aq)→ N₂O(g)+ 2H₂O(l)
• C)AgNO₃(aq)+ KI(aq)→ AgI(s)+ KNO₃(aq)
• D)CaO(s)+ SO₃(g)→ CaSO₄(s)
• E)H₂SO₄(aq)+ 2NaOH(s)→ Na₂SO₄(aq)+ 2H₂O(l)

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