If \[KMn{{O}_{4}}\] is reduced by oxalic acid in an acidic medium then – McqOptions

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1.	If \[KMn{{O}_{4}}\] is reduced by oxalic acid in an acidic medium then oxidation number of Mn changes from
A.	4 to 2
B.	6 to 4
C.	+7 to+2
D.	7 to 4
Answer» D. 7 to 4

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