On adding `KMnO_(4)` to cold conc. `H_(2)SO_(4),` it gives
On adding `KMnO_(4)` to cold conc. `H_(2)SO_(4),` it gives
A. `MnO_(2)`
B. `Mn_(2)O_(3)`
C. `Mn_(2)O_(7)`
D. `MnO_(3).`
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Correct Answer - C
`2K MnO_(4)+ 2H_(2) SO_(4)to 2KHSO_(4)+ underset(("Green oily liquid"))(Mn_(2) O_(7)+H_(2)O)`
`Mn_(2)O_(7)` explodes on heating.
`2Mn_(2)O_(7)overset(Delta)to4MnO_(2)+3O_(2)`
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