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When MnO2 is fused with KOH and O2, what...

When `MnO_2` is fused with KOH and `O_2`, what is the product formed and its colour?
`MnO_2+KOH +O_2 to"_________" + H_2O`

A

MnO - coloureless

B

`K_2MNO_4` - purple

C

`K_2MnO_4` -dark green

D

`MnO_3` -black

Text Solution

Verified by Experts

The correct Answer is:
C
`2MnO_2+4KOH+O_2 to ("dark green")(2K_2MnO_4)+2H_2O`
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NCERT FINGERTIPS-THE D- AND F- BLOCK ELEMENTS -Some Important Compounds Of Transition Elements
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  2. One mole of acidified K(2)Cr(2)O(7) on reaction with excess of KCl wil...

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  3. What would happen when a solution of potassium chromate is treated wit...

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  4. Identify the correct structure of dichromate ion.

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  5. In the dichromate anion (Cr2O7^(2-))

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  6. When MnO2 is fused with KOH and O2, what is the product formed and its...

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  7. The equation 3MnO4^(2-)+4H^(+)to2MnO4^(-)+MnO2+2H2O represents

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  9. Complete the given reactions. (A) 2MnO4^(-)+H2O+I^(-)to2ul((i))+2O...

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  10. The number of moles of KMnO(4) that will be needed to react completely...

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  11. Complete the given reaction. 2Mn^(2+)+5ul((i))+8H2Oto2ul((ii))+10ul...

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  12. Which of the following is correct representation of reaction of acidif...

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  13. Which of the following reactions is not correct ?

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  14. A solution of KMnO4 is reduced to various products depending upon its ...

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  15. In acidic medium, KMnO4 oxidises FeSO4 solution. Which of the followin...

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  16. Complate the following reactions. (i) Cr2O7^(2-)+3SO2+2H^(+)to2Cr^(3...

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  17. Complete the following reactions. (i) MnO4^(-)+2H2O+3e^(-)to""+4OH^...

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  18. Fill the missing products in the following reactions. (i) 2MnI4^(-...

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  19. When an oxide of manganese (P) is fused with KOH in the presence of an...

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  20. A violet compound of manganese (P) decomposes on heating to liberate o...

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