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Pyrolusite ore on oxidation with KCIO(3)...

Pyrolusite ore on oxidation with `KCIO_(3)//KNO_(3)` in basic medium produces dark green coloured compound `(A)`, which on electrolysis produces a purple coloured compound `(B)`. The purple coloured rhombic prisms. It shows different reactions in different mediums.
Excess of compounds (B) on heating with conc. `H_(2)SO_(4)` gives an explosive oil (C ), which on heating decomposes to gives another compound (D ) along with oxygen.
Identify (D).

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:
B
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Pyrolusite ore on oxidation with KCIO_(3)//KNO_(3) in basic medium produces dark green coloured compound (A) , which on electrolysis produces a purple coloured compound (B) . The purple coloured rhombic prisms. It shows different reactions in different mediums. Excess of compounds (B) on heating with conc. H_(2)SO_(4) gives an explosive oil (C ), which on heating decomposes to gives another compound (D ) along with oxygen. On passing CO_(2) in the solution of (A), a purple coloured solution along with brown ppt is observed.

Pyrolusite ore on oxidation with KCIO_(3)//KNO_(3) in basic medium produces dark green coloured compound (A) , which on electrolysis produces a purple coloured compound (B) . The purple coloured rhombic prisms. It shows different reactions in different mediums. Excess of compounds (B) on heating with conc. H_(2)SO_(4) gives an explosive oil (C ), which on heating decomposes to gives another compound (D ) along with oxygen. The nature of compound (C ) is :

Pyrolusite ore on oxidation with KCIO_(3)//KNO_(3) in basic medium produces dark green coloured compound (A) , which on electrolysis produces a purple coloured compound (B) . The purple coloured rhombic prisms. It shows different reactions in different mediums. Excess of compounds (B) on heating with conc. H_(2)SO_(4) gives an explosive oil (C ), which on heating decomposes to gives another compound (D ) along with oxygen. When (D) reacts with PbO_(2)//HNO_(3) it produces a purple // pink coloured compound (E). Identify (E)

Pyrolusite ore on oxidation with KCIO_(3)//KNO_(3) in basic medium produces dark green coloured compound (A) , which on electrolysis produces a purple coloured compound (B) . The purple coloured rhombic prisms. It shows different reactions in different mediums. Excess of compounds (B) on heating with conc. H_(2)SO_(4) gives an explosive oil (C ), which on heating decomposes to gives another compound (D ) along with oxygen. Red coloured oxide (M) whose cation has pseudo inert electronic configuration reacts with compound (B) in acidic medium gives another oxide (N) which is black in colour. When sulphate of its metal is reacted with K_(4)[Fe(CN)_(6) it produces chocolate brown ppt. Select the correct statement.

Pyrolusite ore on oxidation with KClO_(3) / KNO_(3) in basic medium produces dark green coloured compound "(A)," which on electrolysis produces a purple coloured compound (B).The purple coloured compound can be crystallised to deep purple rhombic prisms.It shows different reactions in different mediums.Excess of compound (B) on heating with conc. H_(2)SO_(4) gives an explosive oil (C),which on heating decomposes to gives another compound (D) along with oxygen.Identify (D)

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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 2
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  2. Which of the following statements are correct?

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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 states 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 due to

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

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

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  10. Which of the following statement(s) is/are correct?

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  11. Pyrolusite is MnO(2) used to prepare KMnO(4). Steps are, MnO(2)overset...

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  12. Which of the following statements are correct.

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

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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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