**Match Column I (Reactant) with Column II (n-factor for the given change):** <br> **Column I:** <br — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

**Logic:** <br> (A) $2Cu^+ \rightarrow 2Cu^{2+}$ (2) and $S^{2-} \rightarrow S^{4+}$ (6). Total = 8. <br> (B) $Fe^{2+} \rightarrow Fe^{3+}$ (1) and $2S^- \rightarrow 2S^{4+}$ (10). Total = 11. <br> (C) $Fe^{2+} \rightarrow Fe^{3+}$ (1), $6C^{2+} \rightarrow 6C^{4+}$ (12), $6N^{3-} \rightarrow 6N^{5+}$ (48). Total = 61. <br> (D) $N$ goes from -3 to +5. Total = 8.