H_2O_2 is prepared in the laboratory when: – InterviewSolution

1.	H_2O_2 is prepared in the laboratory when:
Answer» `MnO_2` is added to DILUTE cold `H_2SO_4` `BaO_2` is added to `CO_2` BUBBLING through cold WATER `PbO_2` is added to an acidified solution of `KMnO_4` `Na_2O_2` is added to boiling water Answer :B

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