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Hydrogen is a common reductant of organ...

Hydrogen is a common reductant of organic chemicals, but it is not widely used in metallurgy. Substantiate.

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Metallurgical reductions are usually high temperature processes. At elivated temperatures, hydrogen may form hydrides with metals. Metallurgical operations in open vessels lead to be combination of hydrogen with oxygen to form water.
Further, Ellingham curve has a positive slope and is parallel to the curves of several metal oxides.
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