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Question

In Goldschmidt thermite process, reducing agent is:

A
Fe
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B
Na
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C
Ca
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D
Al
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Solution

The correct option is C Al
Alumino thermite process: Certain oxides of Mn, Cr do not reduce by carbon due to very high melting point. They are reduced by Al.

Reactions:
Cr2O3+2Al2Cr+Al2O3
3Mn3O4+8Al9Mn+4Al2O3

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