Question

Iron is rendered passive by treatment with concentrated

Solution

Correct option is

HNO3

Iron is rendered passive by concentrated HNO3 due to formation of thick protective layer of Fe3O4.

SIMILAR QUESTIONS

Q1

Bond angle in PH3 is:

Q2

 In OF2, number of bond pairs and lone pairs of electrons are respectively:

Q3

The correct order of polarizability for I , Br, Cl, F–  is:

Q4

Type of bonds present in CuSO4.5H2O are only