The following reacts with water to give H2O2

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H2SO4

H2S2O8

PbO2

MnO2

answer is B.

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Detailed Solution

If you take 1:1 ratio of H2O and H2S2O8 the we will get Sulphuric acid and peroxymono sulphuric acidIf you take 1:2 ratio of H2S2O8 & H2O then we will get 2:1 ratio of H2SO4 & H2O2. H2S2O8→ 2H2O1 mole2H2SO4+1H2O2

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