1.

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)

Answer»

`V_(2)O_(5), Cr_(2)O_(3)`
`CrO_(3), V_(2)O_(4)`
`Mn_(2)O_(7), CRO`
`Cr_(2)O_(3), Mn_(2)O_(7)`

Answer :A


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