AIIMS2011Chemistry-Redox Reactions
AIIMS 2011 Chemistry Oxidation States MCQ Question
Type: MCQ-numerical-Medium-Class 11
When KMnO₄ reacts with KBr in alkaline medium gives bromate ion. Then oxidation state of Mn changes from +7 to
A
+6
B
+4
C
+3
D
+2
Correct Answer
Option B
Detailed Explanation
2MnO4- + Br- + H2O → 2MnO2 + BrO3- + 2OH-
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