Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Bond and Molecular Structure
What is the chemical name of Marble?
1
Calcium carbonate
2
Sodium hydroxide
3
Calcium hydroxide
4
More than one of the above
5
None of the above