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In a conjugate pair of reductant and oxidant, the oxidant has ___________.

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Important Questions on Redox Reactions

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When Sn2+ changes to Sn4+ in a reaction, then:
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Oxidation number of carbon in carbon suboxide (C3O2) is ____.
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The oxidation number of Ba in barium peroxide is 
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What is the sum of the oxidation numbers of all the atoms in (NH4)2SO4?
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Which of the following acids contain sulphur in two different oxidation states?
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In which of the following compounds, sulphur exhibits both positive and negative oxidation states?

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The oxidation number of osmium is +8 in its oxide. What is the correct formula of the oxide?
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In which of the following compounds, oxygen exhibits fractional oxidation state?