NEET Chemistry Hydrogen Questions Solved


H2O2 restores the colour of old lead paintings, blackened by the action of H2S gas, by:

(1) converting PbO2 to Pb

(2) oxidising PbS to PbSO4

(3) converting PbCO3 to Pb

(4) oxidizing PbSO3 to PbSO4

(2)  PbS + 4H2O2         PbSO4 +4H2OBlack                             White

Difficulty Level:

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