(a) H2O2 + O3 -> H2O + 2O2 (b) H2O2 + Ag2O -> 2Ag + H2O + O2 Role of hydrogen peroxide in the above reactions is respectively -

1. A. Oxidizing in (a) and reducing in (b)
2. B. Reducing in (a) and oxidizing in (b)
3. C. Reducing in (a) and (b)
4. D. Oxidizing in (a) and (b)

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