$\begin{array}{l} i) M g + C l_{2} \to M g C l_{2} \\ i i) 2 F e_{2} O_{3} + 4 A l \to 4 F e + 2 A l_{2} O_{3} \\ i i i) C u S O_{4} + Z n \to C u + Z n S O_{4} \\ i v) H_{2} + S \to H_{2} S \end{array}$
The following options are given based on the above four chemical equations. Choose the incorrect set which represents substance oxidised, substance reduced, oxidising agent and reducing agent respectively.

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Mg (Substance oxidized) $C l_{2}$ (Substance reduced)

$C l_{2}$ (Oxidising agent) Mg (Reducing agent)

Zn (Substance oxidized) $C u S O_{4}$ (Substance reduced)

$C u S O_{4}$ (Oxidising agent) Zn (Reducing agent)

Al (Substance oxidized) $F e_{2} O_{3}$ (Substance reduced)

$F e_{2} O_{3}$ (Oxidising agent) Al (Reducing agent)

$H_{2}$ (Substance oxidized) S (Substance reduced)

$H_{2}$ (Oxidising agent) S (Reducing agent)

answer is D.

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Detailed Solution

In the given equation $H_{2} + S \Rightarrow H_{2} S$ . is reducing agent and ‘S’ is oxidizing agent.

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