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When MnO(2) is fused with KOH, a coloure...

When `MnO_(2)` is fused with `KOH,` a coloured compound is formed, the product and its colour is:

A

`K_(2)MnO_(4)`, green

B

`Mn_(2)O_(3)`, brown

C

`Mn_(2)O_(4)`, black

D

`KMnO_(4)`,Purple

Text Solution

Verified by Experts

The correct Answer is:
A
`2MnO_(2)+4KOH+O_(2)rarr2K_(2)MnO_(4)+H_(2)O`
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NARAYNA-CHEMISTRY OF HEAVY METALS-SINGle Answer Questions(LEVEL-II)
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  5. CuSO(4) solution reacts with excess of KCN solution to form:-

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  9. Which of the following is not formed when FeC(2)O(4) heated in the abs...

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  13. When Pb(3)O(4) is treated with conc. HNO(3), the insoluble product obt...

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  14. The correct order of stability is

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  15. The precipitate obtained by adding lead nitrate solution to a sodium c...

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  16. Which one of the following anions will give a white precipitate with P...

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  17. Purple of Cassius is obtained by the addition of SnCl(2) solution to a...

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  18. Cr(2)O(7)^(2-)underset(Y)overset(X)hArr2CrO(4)^(2-), X and Y are respe...

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  20. (NH(4))(2)Cr(2)O(7) (ammonium dichromate) is used in fire works. The g...

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