1.

Which is the following metallic oxidesexhibit amphoteric nature ?

Answer»

`BAO`
`Al_(2)O_(3)`
`Na_(2)O`
`CAO`

Solution :The OXIDES of alkali mentals (i.e., `Na_(2)O`) and alkaline EARTH METALS (i.e. , `CaO, BaO`) are distinctly basic but`Al_(2)O_(3)` is ampholericin character.


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