Question:
The sulphide ore of copper containing iron as impurity is removed in the form of a slag by adding an oxide of element X. Identify the element X.
The sulphide ore of copper containing iron as impurity is removed in the form of a slag by adding an oxide of element X. Identify the element X.
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Silicon dioxide reacts with FeO to remove it as slag in copper extraction.
Updated On: May 12, 2025
- Calcium
- Magnesium
- Silicon
- Aluminum
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The Correct Option is C
Solution and Explanation
In the metallurgy of copper, iron impurities are removed by adding silica (SiO$_2$).
FeO (impurity) + SiO$_2$ → FeSiO$_3$ (slag)
Hence, the oxide of Silicon helps in forming a fusible slag with FeO.
FeO (impurity) + SiO$_2$ → FeSiO$_3$ (slag)
Hence, the oxide of Silicon helps in forming a fusible slag with FeO.
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