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In Gold Schmidt reaction, certain metallic oxides are reduced to the metallic state by heating with

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metallic magnesium

metallic aluminium

metallic iron

sodium metal

answer is B.

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Detailed Solution

2Al+Fe₂O₃→Al₂O₃+2Fe; ΔH=−ve

The heat given out is used in welding. This is also called Goldschmidt at aluminothermic process.

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