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Which of the following is amphoteric oxi...

Which of the following is amphoteric oxide?
`Mn_(2)O_(7),CrO_(3),Cr_(2)O_(3),CrO,V_(2)O_(5),V_(2)O_(4)`

A

`V_(2)O_(5),Cr_(2)O_(3)`

B

`Mn_(2)O_(7), CrO_(3)`

C

`CrO, V_(2)O_(5)`

D

`V_(2)O_(5), V_(2)O_(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
`V_(2)O_(5)` and `Cr_(2)O_(3)` are amphoteric oxide because both react with alkalies as well as acids.
Note In lower oxides, the basic character is predominant while in higher oxides, the acidic character is predominant.
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NCERT EXEMPLAR-D AND F-BLOCK ELEMENTS-D And F-Block Elements
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  2. KMnO(4) acts as an oxidising agent in acidic medium. The number of mol...

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

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  4. Gadolinium belongsd to 4f series. It's atomic number is 64. which of t...

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

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

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  7. KMnO(4) acts as on oxidising agent in alkaline medium. When alkaline K...

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  8. Which of the following statements is not correct?

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  10. Higher oxidation state of manganese in fluoride is +4 (MnF(4)) but hig...

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

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  12. Why HCl not used to make the mdeium acidic in oxidation reactions of K...

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

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  14. Transition elements show magnetic moment due to spin and orbital motio...

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  15. In the form of dichromate, Cr(VI) is a strong oxidising agent in acidi...

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  16. Which of the following actinoids show oxidation states upto +7?

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  17. General electronic configuration of actinoids is (n-2)f^(1-14)(n-1)d^(...

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  18. Which of the following lanthanoids show +2 oxidation state besides the...

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