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Which metal is used for reducing Cr(2)O(...

Which metal is used for reducing `Cr_(2)O_(3)` and `Mo_(2)O_(3)` to metal ?

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`Al` powder is used for reducing `Cr_(2)O_(3)` and `Mo_(2)O_(3)`.
`Cr_(2)O_(3)+2Alunderset(Delta)overset(BaO_(2)//Mg)(to)2Cr+Al_(2)O_(3)`
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