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Q.
Which one of the following compounds is a peroxide?
NTA AbhyasNTA Abhyas 2022
Solution:
It is clear that among the given molecules only $BaO_{2}$ is a peroxide. In peroxides, the oxidation state of O is -1 and they give $H_{2}O_{2}$ , with dilute acids, and have peroxide linkage. BaO2 has peroxide linkage.(Ba+2 $\text{O}_{2}^{- 2}$ )