Question:
Which reducing agent is used in the extraction of magnesium from calcined dolomite in Pidgeon process?
Which reducing agent is used in the extraction of magnesium from calcined dolomite in Pidgeon process?
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Pidgeon = Silicon. Since ferro-silicon is the industrial source of silicon, it is the correct choice.
Updated On: Jul 4, 2026
- Carbon
- Ferro-silicon
- Silicon
- Sodium
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The Correct Option is B
Solution and Explanation
Step 1: Concept The Pidgeon process is a silicothermic reduction method used to produce magnesium metal from magnesium oxide.
Step 2: Meaning Calcined dolomite ($MgO \cdot CaO$) is reacted with a reductant at high temperatures under vacuum.
Step 3: Analysis While pure silicon could theoretically work, the industrial process utilizes ferro-silicon because it is a more cost-effective and efficient source of silicon for the reduction reaction.
Step 4: Conclusion Therefore, ferro-silicon is the specific reducing agent employed in the commercial Pidgeon process. Final Answer: (B)
Step 2: Meaning Calcined dolomite ($MgO \cdot CaO$) is reacted with a reductant at high temperatures under vacuum.
Step 3: Analysis While pure silicon could theoretically work, the industrial process utilizes ferro-silicon because it is a more cost-effective and efficient source of silicon for the reduction reaction.
Step 4: Conclusion Therefore, ferro-silicon is the specific reducing agent employed in the commercial Pidgeon process. Final Answer: (B)
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