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When MnO(2) fused with KOH, a coloured c...

When `MnO_(2)` 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

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The correct Answer is:
A
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 3
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  2. In the standardization of Na(2)S(2)O(3) using K(2)Cr(2)O(7) by iodomet...

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  3. When MnO(2) fused with KOH, a coloured compound is formed . The produc...

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  4. The product of oxidation of I^(-) with MnO(4)^(-) in alkaline medium i...

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  5. The pair of compounds having metals in their highest oxidation state i...

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  6. Which of the following pair of compounds is expected to exhibit same c...

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  7. Give equation and describe the process for the developing of black and...

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  8. Identify (A),(B) and (C). Also explain colour difference between MCl(4...

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  9. Match the reaction in column I with nature of the reactions/type of th...

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  10. Among the following , the coloured compound is

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  11. Find the oxidation number of Mn in the product of alkaline oxidative f...

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  12. Reduction of the metal centre in aqueous permanganate ion involves

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  13. The colour of light absorbed by an aqueous solution of CuSO(4) is

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

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  15. Consider the following list of reagent "Acidified" K(2)Cr(2)O(7), "a...

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  16. Which of the following statement are correct about Cr^(2+) (Z = 24) an...

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  17. Fe^(3+) is reduced to Fe^(3+) by sing

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  18. In the following sequence in aqueous solution, the species X, Y and Z,...

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  19. Which of the following combination will produce H(2) gas ?

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  20. Number of electrons transferred in each case when KMnO(4) acts as an o...

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