Chemistry-Oxidation Number
NEET Chemistry Oxidation Number MCQ Question
Type: MCQ-diagram based-Easy-Class 11
In the diagram shown above, which element has an oxidation number change from +6 to +3?

A
Chromium
B
Sodium
C
Sulphur
D
Lead
Correct Answer
Option A
Detailed Explanation
According to the NCERT context, when potassium dichromate(VI) reacts with sodium sulphite in an acidic solution, chromium undergoes a reduction in oxidation number from +6 to +3.
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