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Aluminium becomes passive in...

Aluminium becomes passive in

A

`Cr_(2)O_(3)`

B

conc. `HNO_(3)`

C

`HClO_(4)`

D

all of the above

Text Solution

Verified by Experts

The correct Answer is:
B
Due to the formation of layer of `Al_(2)O_(3)` on the surface of Al, on reaction with cone `HNO_(3) Al` becomes passive.
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