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Potassium manganate (K2MnO4) is formed w...

Potassium manganate `(K_2MnO_4)` is formed when

A

Chlorine is passed inot aqueous `KMnO_(4)` soluiton

B

Manganese dioxide is fused with potassium hydroxide in air

C

Formaldehyde reacts with potassium permangante in presenc of a strong alkali

D

Potassium permanganate reacts with conc. Sulphuric acid

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The correct Answer is:
B, C
`2KOH+underset("dioxide")underset("Manganese")(MnO_(2))+Orarrunderset(" Potassium manganate")(K_(2)MnO_(4))+H_(2)O`
`HCHO+2KMnO_(4)+2KOHrarrK_(2)MnO_(4)+H_(2)O+HCOOH`
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ERRORLESS -D & P-BLOCK ELEMENTS-JEE Section (More than one choice correct answer)
  1. Potassium manganate (K2MnO4) is formed when

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  2. The aqueous solution of the following salts will be coloured in the ca...

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  3. Which of the following alloys contain (s) Cu and Zn?

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  7. Which of the following halides react(s) with AgNO(3(aq)) to give a pre...

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  8. The correct statement(s) about Cr^(2+) and Mn^(3+) is(are) [Atomic n...

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  9. Fe^(3+) is reduced to Fe^(2+) of NaOH

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  11. To an acidified dichromate solution, a pinch of Na(2)O(2) is added and...

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  16. CuSO(4) reacts with KCN to form

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