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Question

A metallic oxide reacts with water to form its hydroxide, hydrogen peroxide and also liberates oxygen. The metallic oxide could be :
  1. KO2
  2. Na2O2
  3. CaO
  4. Li2O

A
KO2
B
Li2O
C
Na2O2
D
CaO
Solution
Verified by Toppr

Potassium superoxide reacts with water as follows:

2KO2+2H2O2KOH+H2O2+O2

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