NEET Chemistry Oxidation Number MCQ Question
In a redox reaction involving Cr2O7^2- and SO3^2-, which element undergoes a decrease in oxidation number, and by how many units does this change occur?
Chromium, decrease by 3 units
Sulfur, decrease by 2 units
Chromium, decrease by 2 units
Sulfur, decrease by 3 units
Correct Answer
Detailed Explanation
In the redox reaction, the oxidation state of chromium in Cr2O7^2- changes from +6 to +3, indicating a decrease of 3 units.
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