Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
Limestone on decomposition produces _______ and carbon-dioxide.
1
Calcium oxide
2
Calcium hydroxide
3
Calcium hydrogen carbonate
4
More than one of the above
5
None of the above