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Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium

Options

  1. AIncreases from +3 to +6
  2. BDecreases from +6 to +3
  3. CRemains unchanged
  4. DDecreases from +6 to +2

Correct answer

B. Decreases from +6 to +3

Step-by-step solution

Decreases from +6 to +3 .

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