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On addition of small amount of KMnO(4) t...

On addition of small amount of `KMnO_(4)` to concentrated `H_(2)SO_(4)`, a green oily compound is obtained which is highly explosive in nature. Identity the compound from the followings -

A

`Mn_(2)O_(7)`

B

`MnO_(2)`

C

`MnSO_(4)`

D

`Mn_(2)O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`KMnO_(4)` reacts with cold conc. `H_(2)SO_(4)` to form `Mn_(2)O_(7)` (a green oil). `2KMnO_(4)+2H_(2)SO_(4)rarr Mn_(2)O_(7)+2KHSO_(4)+H_(2)O`
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -SOLVED NCERT EXEMPLAR PROBLEMS (Multiple Choice Question)
  1. Metallic radii of some transition elements are given below. Which of t...

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  2. Generally transition elements form coloured salts due to the presence ...

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  3. On addition of small amount of KMnO(4) to concentrated H(2)SO(4), a gr...

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  4. The magnetic nature of elements depends on the presence of unpaired el...

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  5. Which of the following oxidation states is common for all lanthanoids ...

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  6. Which of the following reactions are disproportionation reactions - ...

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  7. When KMnO(4) solution is added to oxalic acid solution, the decolouris...

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  8. There are 14 elements in actinoid series. Which of the following eleme...

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  9. KMnO(4) acts as an oxidising agent in acidic medium. The number of mol...

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  10. Which of the following is amphoteric oxide ? Mn(2)O(7), CrO(3), Cr(2)O...

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  11. Gadolinium belongs to 4f - series. It's atomic number is 64. Which of ...

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  12. Interstitial compounds are formed when small atoms are trapped inside ...

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  13. The magnetic moment is associated with its spin angular momentum and o...

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  14. KMnO(4) acts as an oxidising agent in alkaline medium. When alkaline K...

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  15. Which of the following statements is not correct -

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  16. When acidified K(2)Cr(2)O(7) solution is added to solution of Sn^(2+) ...

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  17. Highest oxidation state of manganese in fluoride is + 4 (MnF(4)) but h...

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  18. Although zirconium belongs to 4d transition series and hafnium to 5d t...

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  19. Why is HCl not used to make the medium acidic in oxidation reactions o...

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  20. Generally transition elements and their salts are coloured due to the ...

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