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Potassium manganate (K2MnO4) is formed w...

Potassium manganate `(K_2MnO_4)` is formed when

A

Chlorine is passed into aqueous `KMnO_(4)` is formed when

B

manganese dioxide is fused with potassium hydroxide in air

C

formaldehyde reacts with potassium permanganate in presence of a strong alkali

D

potassium permanganate reacts with conc. Sulphuric acid.

Text Solution

Verified by Experts

The correct Answer is:
B, C
(b,c) `2KOH+MnO_(2)+OrarrK_(2)MnO_(4)+H_(2)O`
`HCHO+2KMnO_(4)+2KOHrarr2K_(2)MnO_(4)+H_(2)O+O_(2)`
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