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Which of the following compounds is meta...

Which of the following compounds is metallic and ferromagnetic ?

A

`VO_2`

B

`MnO_2`

C

`TiO_2`

D

`CrO_2`

Text Solution

Verified by Experts

The correct Answer is:
D
Out of all four given metallic oxides. `CrO_2` is attracted by magnetic field very strongly. The effect persists even when the magnetic field is removed. Thus `CrO_2` is metallic and ferromagnetc in nature.
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DISHA PUBLICATION-THE D- AND F- BLOCK ELEMENTS -EXERCISE - 2 CONCEPT APPLICATOR
  1. Which of the following compounds is metallic and ferromagnetic ?

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  2. Of the following outer electronic configurations of atoms, the highest...

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  3. The correct order of magentic moments (spin only values is B.M ) among...

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  4. The basic character of the transition metal monoxides follows the orde...

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  5. Four successive members of the first row transition elements are liste...

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  6. Which of the following does not represent the correct order of the pro...

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  7. Zn and Hg do not show variable valency like d-block elements because-

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  8. Which of the following statement is incorrect

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  9. A compound of iron exists as a dimer in vapour state. It is hygroscopi...

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  10. Which of the following statements is wrong ?

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  11. A metal M and its compounds can gives the following observable changes...

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  12. Which tow sets of reactants best represents the amphoteric character o...

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  13. Copper is very slowly oxidised on the surface in moist air, givinga gr...

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  14. A red solid is insoluble in water. However, it becomes soluble if some...

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  15. Which of the following reactions represents " developing"in photograph...

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  16. In the extraction of silver from argentite ore the ore is treated witl...

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  17. The dichromate ion is in cquilibrium with chromate ion in aqucous Solu...

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  18. A blue colouration is not obtained when

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  19. When potassium ferrocyanide crystals are heated with conc. sulphuric a...

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  20. Precipitate of AgCl is soluble in liquid NH(3) the compound forms

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  21. Which of the following products are obtained when Na2CO3 is added to a...

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