Concept:Concentrated trioxonitrate(V) acid makes aluminium passive by forming a protective oxide layer on its surface.
Explanation:Trioxonitrate(V) acid is nitric acid,
HNO3.
When concentrated
HNO3 comes in contact with aluminium, it forms a thin, non-porous oxide layer on the aluminium surface.
This oxide layer prevents further reaction between the acid and the aluminium.
Hence, aluminium does not react with the acid, making it suitable for transporting the acid.
Answer:C. does not react with the acid