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1. There are four types of reactions given
\(Fe_2O_3\) + \(2Al\) \(\xrightarrow[]{Heat}\) \(2Fe\) + \(Al_2O_3\)
\(CuO\) + \(H_2\) \(\xrightarrow[]{}\) \(Cu\) + \(H_2O\)
\(H_2S\) + \(SO_2\) \(\xrightarrow[]{}\) \(3S\) + \(2H_2O\)
\(Mg\) + \(O_2\) \(\xrightarrow[]{}\) \(MgO\)
The reducing agents in I & II and oxidizing agents in III & IV are
2. Oxidation and reduction are
Answer variants:
\(Al\), \(H_2\), & \(SO_2\), \(O_2\)
Loss of electrons & gain of electrons respectively
\(Al\), \(CuO\), & \(H_2S\), \(O_2\)
Loss of electrons & loss of electrons
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