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Pyrolusite is used to prepare potassium ...

Pyrolusite is used to prepare potassium permanganate `MnO_(2)overset(X)toMnO_(4)^(2)overset(Y)toMnO_(4)`X and Y are

A

fuse with KOH/air, electrolytic oxidation

B

fuse with KOH/`KNO_(3)`, electrolytic oxidation

C

fise with concentrated `HNO_(2)`air, electrolytic reduction

D

dissolve in `H_(2)O` oxidation.

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The correct Answer is:
A, B
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RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 2
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  2. Titanium dioxide is added in the interior paints for walls of rooms, h...

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  3. The melting point of Zn is lower as compared to those of the other ele...

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  4. The less stable oxidation state of Cr are:

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  5. Which of the following statement is/are correct?

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  6. Select correct statement(s).

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  7. The colour of the transition metal ions is/are due to:

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  8. Which of the following chemical reaction(s) is/are involved in develop...

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  9. Which of the following statement are correct when a mixture of NaCl a...

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  10. Monazite is the ore of:

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  11. Pyrolusite is used to prepare potassium permanganate MnO(2)overset(X)t...

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  12. Which is not a mineral of aluminium?

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  13. Transition metals usually from coloured complexes and d-d transitions ...

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  14. Transition metals usually from coloured complexes and d-d transitions ...

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  15. Name the compound which gives blue colour to the glass.

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  16. Pyrolusite ore on oxidation with KCIO(3)//KNO(3) in basic medium produ...

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  17. Pyrolusite ore on oxidation with KCIO(3)//KNO(3) in basic medium produ...

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  18. . Q. Which combination is correct:

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  19. . Q. Which combination is/are not correct

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  20. . Q. Which combination is correct for Ni.

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