In the reaction, H_(2)O_(2)+PbS to H_(2)O+PbSO_(4) the increase in the oxidation number of sulphur is

In the reaction, H_(2)O_(2)+PbS to H_(2)O+PbSO_(4) the increase in the

1.	In the reaction, H_(2)O_(2)+PbS to H_(2)O+PbSO_(4) the increase in the oxidation number of sulphur is
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