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Question

How many metals are commercially reduced by Goldschmidt alumino-thermic process from the given metals?
Na, Pb, AI, Mn, Cr, Sn

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Solution

Two metals (Cr and Mn) are commercially reduced by Goldschmidt alumino-thermic process.
For example, Cr2O3+2AlAl2O3+2Cr+heat
This method is also used for the extraction of ferric oxide to iron.

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