Question

4.
Rusting is
1
Peeling off iron surface
2
Removal of impurities from the surface
of iron metal
3
Slow conversion of iron metal into
hydrated ferric oxide in moist ain
4
Formation of sticky layer on the
surface of iron in moist air​

Answer 1

Answer:

Option C - slow conversion of iron metal into hydrated ferric oxide in moist air

Explanation:

Rusting is the process in the iron turns in to reddish brown colour when exposed to moist air

Answer 2

Answer:

I guess it is

Formation of sticky layers on the surface of iron in moist air .