1.

When a mananous salt is fused with a mixture of `KNO_(3)` and and solid NaOH, the oxidation number of Mn change from +2 to:A. `+4`B. `+3`C. `+6`D. `+7`

Answer» Correct Answer - C
`overset((+2))(Mn^(2+)) + NO_(3)^(-_ + OH^(-) to overset((+6))(Mn) O_(2)^(4-) + H_(2)O + NO`
The oxidation number of Mn changes form ` + 2 ` to + 6


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