1.

Which one of the following order presents the correct sequence of the increasing basic nature of the given oxides?

Answer»

`Al_(2)O_(3)ltMgOltNa_(2)OltK_(2)O`
`MgOltK_(2)OltAl_(2)O_(3)ltNa_(2)O`
`Na_(2)OltK_(2)OltMgOltAl_(2)O_(3)`
`K_(2)OltNa_(2)OltAl_(2)O_(3)ltMgO`

Answer :A


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