In lead storage battery, which of the following reaction is anode reaction?

PbO + H₂SO₄  → PbSO₄ + 2H⁺ + 2e^-

The cell reactions when the Lead storage battery is in use are given below:

Anode: Pb(s) + SO₄^2–(aq) → PbSO₄ (s) + 2e^–

Cathode: PbO₂ (s) + SO₄^2–(aq) + 4H⁺(aq) + 2e^– → PbSO₄ (s) + 2H₂O (l)

i.e., overall cell reaction consisting of cathode and anode reactions is:

Pb(s) + PbO₂ (s) + 2H₂SO₄ (aq) → 2PbSO₄ (s) + 2H₂O(l)