1.

Which one of the following reactions doesnot occur?

Answer»

`BAO+O_(3) to BaO_(2)+O_(2)`
`PbS+4O_(3) to PbSO_(4) +4O_(2)`
`H_(2)O_(2)+O_(3) to H_(2)O+2O_(2)`
`2Hg+O_(3) to Hg_(2)O+O_(2)`

Answer :A


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