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प्रश्न
In Carius method for sulphur estimation, what happens to sulphur present in the organic compound during heating with fuming HNO₃?
पर्याय
It is reduced to H₂S
It remains unreacted
It is oxidised to H₂SO₄
It forms SO₂ gas only
MCQ
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उत्तर
It is oxidised to H₂SO₄
Explanation:
Fuming nitric acid oxidises sulphur present in the compound to sulphuric acid, which is then converted to BaSO₄ by BaCl₂.
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