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HARDMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryHydrogenAchiever Section

Which of the following reaction produces hydrogen?

A.Mg+H₂O

B.H₂S₂O₈ + H₂O

C.BaO₂ + HCl

D.Na₂O₂ + 2HCl

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