Acidified potassium dichromate is treated with hydrogen sulphide.In th – InterviewSolution

1.	Acidified potassium dichromate is treated with hydrogen sulphide.In the reaction the oxidation number of chromium :
Answer» Increase from +3 to +6 Decreases from +6 to +3 Remains UNCHANGED Decreases from +6 to +2 Answer :B

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