defence exam Army Havildar SAC Mock Test Series 2025 Chemistry Hydrogen Hydrogen and its Hydrides

वह ऑक्साइड जो तनु H2SO4 से क्रिया करने पर H2O2 देता है

1
PbO2
2
BaO2⋅8H2O + O2
3
MnO2
4
TiO2
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