1.

Brown ppt ,of MnO(OH) on boilingwith PbO_(2) andcone HNO_(3)yields a pinkcolourationondilutiondue to theformation of

Answer»

`HMnO_(4)`
`H_(2)MnO_(4)`
`Pb(MnO_(4))_(2)`
`PbMnO_(3)`

ANSWER :a


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