Potassium manganate $(K_{2} M n O_{4})$ is formed when

chlorine is passed into aqueous

K M n O_{4}

solution

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manganese dioxide is fused with potassium hydroxide in air.

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formaldehyde reacts with potassium permanganate in the presence of a strong alkali.

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potassium permanganate reacts with concentrated sulphuric acid.

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Solution

The correct options are
B manganese dioxide is fused with potassium hydroxide in air.
C formaldehyde reacts with potassium permanganate in the presence of a strong alkali.
Only option B and C result in formation of $K M n O_{4}$ .
$4 K O H + 2 M n O_{2} + O_{2} \to 2 K M n O_{4} + 2 H_{2} O$
$H C H O + 2 K M n O_{4} + 2 K O H \to K_{2} n O_{4} + H_{2} O + H C O O H$

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Similar questions

Potassium manganate $(K_{2} M n O_{4})$ is formed when:

F e S O_{4} ?

S n C l_{2}

M n S O_{4}

(X)

(X)

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