What would happen when a small quantity of \( \mathrm{H}_{2} \mathrm{O}_{2} \) is added to a sol...

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What would happen when a small quantity of \( \mathrm{H}_{2} \mathrm{O}_{2} \) is added to a solution of \( \mathrm{FeSO}_{4} \) ?
(A) Colour disappears
(B) \( \mathrm{H}_{2} \) is evolved
(C) An electron is added to \( \mathrm{Fe}^{2+} \)
(D) An electron is lost by \( \mathrm{Fe}^{2+} \)
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