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Which one of the following metal cannot ...

Which one of the following metal cannot be extracted by using Al as a reducing agent ?

A

Na from `Na_(2)O`

B

`Cr` from `Cr_(2)O_(3)`

C

`Mn` from `Mn_(3)O_(4)`

D

W from `WO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Because Na is more electropositive than Aluminium.
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