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# Oxygen evolves on heating

$(a)\;BaO_2\qquad(b)\;CaO_2\qquad(c)\;SrO_2\qquad(d)\;All$

Can you answer this question?

Oxygen evolves on heating $BaO_2,CaO_2$ and $SrO_2$
Hence (d) is the correct answer.
answered Jan 28, 2014