SSC GD Constable 10 Jan 2023 Shift 2 Paper

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Question : 27 of 100

Marks: +1, -0

Identify a redox reaction.

2Pb(NO₃)₂(s) - → - Heat 2PbO(s) + 4NO₂(g) + O₂(g)
CaCO₃(s) - → - Heat CaO(s) + CO₂(g)
MnO₂ + 4HCl → MnCl₂ + 2H₂O + Cl₂
Pb(s) + CuCl₂(aq) → PbCl₂(aq) + Cu(s)

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