Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Basic Concepts of Chemistry
In Calcium oxide the ratio of mass of Calcium and Oxygen is ________.
1
5 ∶ 2
2
3 ∶ 2
3
2 ∶ 3
4
More than one of the above.
5
None of the above