Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
Anodising is a process of forming a thick oxide layer of ______.
1
Oxygen
2
Aluminium
3
Fluorine
4
More than one of the above
5
None of the above