Statement I : Concentrated nitric acid makes metal aluminium passive
Statement II : A protective layer of aluminium oxide is formed on the surface

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If both the statement I and statement II are incorrect

If both the statement I and statement II are correct

If statement I is correct , but statement II is incorrect

If statement I is incorrect , but statement II is correct

answer is A.

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Detailed Solution

Nitric acid (dilute or conc) renders aluminium passive.
Because when aluminium comes into contact with nitric acid, an impervious layer of aluminium oxide is formed.
This layer of aluminium oxide will prevent the nitric acid from coming into contact with the inner aluminium metal.

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