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

Explanation

To determine which metal is used for reducing Cr₂O₃ and Mo₂O₃ to their respective metals, we can follow these steps:

### Step 1: Determine the oxidation states of chromium and molybdenum in their oxides
- For Cr₂O₃, let the oxidation state of chromium be \( x \).
- The formula for the oxidation state is:
\[ 2x + 3(-2) = 0 \quad \text{(since the oxidation state of oxygen is -2)} \]
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