1.

Manganese salt + PbO_(2) + conc. HNO_(2) rarrThe solutionhas purple colour The colour is due to

Answer»

`HMnO_(4)`
A lead salt
`MN(NO_(3))_(2)`
`H_(2)MnO_(4)`

Solution :`Mn^(2+)`is oxidised to `Mn^(2+)` forming`HMnO_(4)`


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