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Potassium manganate (K2MnO4) is formed w...

Potassium manganate `(K_2MnO_4)` is formed when

A

`Cl_(2)` is passed into an aqueous solution of `KMnO_(4)`

B

`MnO_(2)` is fuesed with `KOH`

C

Formaldehyde reacts with `KMnO_(4)` in the presence of strong alkali

D

`KMnO_(4)` reacts with conc. `H_(2)SO_(4)`

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The correct Answer is:
3
`MnO_(4)^(-)` is reduced to `MnO_(4)^(2-)` by `HCHO` in the presence of strong alkali
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RESONANCE-D & F BLOCK ELEMENTS-INORGANIC CHEMISTRY(d & f- Block Elments)
  1. In which of the following reaction "Philosopher's wool" is formed

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  2. CrO3 dissolves in aqueous NaOH to give

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  3. Mercury on heating with aqua regia gives

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  9. [Cr(H2 O)6]Cl3 (at no. of Cr = 24) has a magnetic moment of 3.83 B.M. ...

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