Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Bond and Molecular Structure
Slow eating away of iron articles in the presence of moist air is called ________.
1
Galvanisation
2
Crystallisation
3
Rusting
4
More than one of the above
5
None of the above