Multiple choice

Metals like Cr and Al do not dissolve in concentrated nitric acid because

  1. they are inert

  2. they are less reactive

  3. they are rendered passive by oxide film

  4. they are difficult to oxidise
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Metals such as Cr and Al do not dissolve in concentrated nitric acid because of the formation of a passive film of oxide on the surface of metals.

Keep practicing — related questions