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Chemistry
Aluminium metal becomes passive in
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Q. Aluminium metal becomes passive in
EAMCET
EAMCET 2010
A
cone. $ HN{{O}_{3}} $
B
dil. $ {{H}_{2}}S{{O}_{4}} $
C
very dil. $ HN{{O}_{3}} $
D
cone. $ {{H}_{2}}S{{O}_{4}} $
Solution:
Aluminium metal becomes passive in concentrated $ \text{HN}{{\text{O}}_{\text{3}}} $ due to the formation of an oxide layer over its surface.