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Which of the following does not react with oxygen directly? `Zn,Ti,Pt,Fe`.

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Which of the following does not react with oxygen directly? `Zn,Ti,Pt,Fe`.
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Pt being a noble metal does not react with oxygen directly. Whereas, Zn, Ti and Fe are active meals and react with oxygen to form their respective oxides.
`2Zn+O_2overset(Delta)toZnO`
`Ti_O_2overset(Delta)toTiO_2`
`4Fe+3O_2overset(Delta)to2Fe_2O_3`
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