GKFix MCQ Question

What happens when Potassium Dichromate reacts with H₂S in acidic medium?

• A. Cr₂O₇²⁻ is oxidized to CrO₄²⁻.
• B. Cr₂O₇²⁻ is reduced to Cr³⁺, and H₂S is oxidized to S or SO₂.
• C. H₂S reduces Cr₂O₇²⁻ to metallic Cr.
• D. Cr₂O₇²⁻ precipitates sulfur.