CUET and UG exam CUET UG 2025 Mock Test Series General Science Chemistry Basic Concepts of Chemistry

पोटेशियम (K) और रूबिडियम (Rb) बनता है:

1
सबऑक्साइड 
2
परोऑक्साइड
3
सुपरऑक्साइड
4
डाईऑक्साइड
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