1.

In which of the following reactions H_(2)O_(2) acts as a reducing reagent ?

Answer»

`PbS_((s))+4H_(2)O_(2(AQ)) overset(H^(+))(rarr)PbSO_(4(s))+H_(2)O(l)`
`HOCl+H_(2)O_(2) overset(H^(+))(rarr) H_(3)O^(+)+ Cl^(-1)+O_(2)`
`Mn^(2+)+H_(2)O_(2) overset(OH^(-))(rarr) Mn^(4+)+2OH^(-)`
`2Fe^(2+)+H_(2)O_(2) overset(OH^(-))(rarr) 2Fe^(3+)+2OH^(-)`

Answer :B


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