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From the following flowsheet for the ext...

From the following flowsheet for the extraction of pure metal, answer the given questions.

(vi) following reaction is not involved intermite process :

A

`3Mn_(3) O_(4) + 8 Al rarr 9 Mn + 4Al_(2) O_(3)`

B

`Cr_(2) O_(3) + 2 Al rarr Al_(2) O_(3) + 2Cr`

C

`2Fe + Al_(2) O_(3) rarr 2 Al + Fe_(2) O_(3)`

D

`B_(2) O_(3) + 2Al rarr 2B + Al_(2) O_(3)`

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The correct Answer is:
C
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