sulphur is oxidizing by concentrate nitric acid give reaction
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Hot and concentrated nitric acid is a powerful oxidising agent. It can oxidise sulphur to sulphuric acid. So, the sulphur is oxidised from an oxidation state.Now, consider the reduction half-reaction of nitric acid decomposing to nitrogen dioxide.
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Ans : S + HNO3 -----> H2SO4 + H2O + NO2
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