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H2O2 is prepared in the laboratory when:...

`H_2O_2` is prepared in the laboratory when:

A

`MnO_2` is added to dilute cold `H_2SO_4`

B

`BaO_2` is added to `CO_2` bubbling through cold water

C

`PbO_2` is added to an acidified solution of `KMnO_4`

D

`Na_2O_2` is added to boiling water

Text Solution

Verified by Experts

The correct Answer is:
B
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