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\( \begin{array}{lll}\quad \text { List-A } & & \text { List-B } \\ \begin{array}{l}\text { (A) Intermolecular redox } \\ \text { change }\end{array} & \text { 1. } \mathrm{CO}_{2}+\mathrm{C} \longrightarrow 2 \mathrm{CO} \\ \text { (B) Intramolecular redox } & \text { 2. } \mathrm{As}_{2} \mathrm{O}_{3}+3 \mathrm{H}_{2} \mathrm{~S} \\ \quad \text { change } & & \longrightarrow \mathrm{As}_{2} \mathrm{~S}_{3}+3 \mathrm{H}_{2} \mathrm{O} \\ \text { (C) Auto-redox change } & \text { 3. } \mathrm{KClO}_{4} \longrightarrow \mathrm{KCl}+2 \mathrm{O}_{2} \\ \text { (D) Precipitation } & \text { 4. } \mathrm{C}_{3} \mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2}+2 \mathrm{C}\end{array} \)
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