What is the most common chemical reducing agent in metallurgical processes?

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Quizplus · Accepted Answer

Carbon, in the form of carbon monoxide, is the most common reducing agent in metallurgical processes. It is used to extract metals from their ores and reduce them to their elemental form. Thiosulfate ion is used in certain processes, such as gold extraction, but is not as commonly used as carbon monoxide. Oxygen is not a reducing agent, but rather an oxidizing agent. Sodium metal is used in certain processes but is not as commonly used as carbon monoxide. Carbon dioxide is not a reducing agent, but rather an oxidizing agent.

What Is the Most Common Chemical Reducing Agent in Metallurgical