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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)`

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The correct Answer is:
`0002`
`V_(2)O_(5)` and CrO are amphoteric.
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