Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry Chemical Reaction
The lowest oxidation state of oxygen is seen in which of the following compounds?
1
peroxides
2
superoxides
3
oxygen difluoride
4
More than one of the above
5
None of the above