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Blackened oil painting can be restored into original form by the action of

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Blackened oil painting can be restored into original form by the action of
A. Chlorine
B. `BaO_(2)`
C. `H_(2)o_(2)`
D. `Mno_(2)`
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Correct Answer - C
`{:(PbO+ h_(2)S to Pbs+ H_(2)O),(("white")" "("air")" "("Bloack")),(Pbs+ 4H_(2)O_(2) to PbSO_(4) + 4H_(2)O),("black "" "("white")):}`
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