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Which of the following oxides is a basic oxide?

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Which of the following oxides is a basic oxide?
A. `PbO`
B. `SiO_(2)`
C. `SnO_(2)`
D. `CrO_(3)`
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Correct Answer - A
`PbO` is amphoteric oxide
`pbO+2HNO_(3)rarrPb(NO_(3))_(2)+H_(2)O`
`PbO+2NaOHrarrNa_(2)PbO_(2)+H_(2)O`
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