39. H2O2 restores the colour of old lead paintings,blackened by the ac – InterviewSolution

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1.	39. H2O2 restores the colour of old lead paintings,blackened by the action of H2S gas by a) converting PbO2 to Pb b) oxidising PbS to PbSO4 c) converting PbCO3 to Pb d) oxidising to PbSO3 to PbSO4
Answer» 39. H2O2 restores the colour of old lead paintings,blackened by the action of H2S gas by a) converting PbO2 to Pb b) oxidising PbS to PbSO4 c) converting PbCO3 to Pb d) oxidising to PbSO3 to PbSO4

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