1.

The acid which makes iron passive is _________ (A) Conc. HCl (B) Conc. H2SO4 (C) Conc. HNO3 (D) Conc.

Answer»

(C) Conc. HNO3 

Here HNO3 is most stronger oxidizing agent. 

HNO3 reacts on the surface of iron and passiveness the surface.



Discussion

No Comment Found

Related InterviewSolutions