__________ gms of oxygen react with 240gms of magnesium. (The chemical reaction is 2Mg+O2→2MgO).
120
80
160
90
NaHCO3 is called _____________.
sodium carbonate
sodium bicarbonate
sodium tricarbonate
none
__________ is an example of radical.
Na
Mg
Mg2+
Cl
When Barium chloride reacts with sulphuric acid gives BaSO4 and __________.
HCl
Cl2
H2
SO2
Calcium hydroxide contains one atom of calcium, two atoms of hydrogen and ________ atoms of oxygen.
1
3
2
4
Calcium carbonate reacts with Hydrochloric acid and gives _________ ,water and CO2..
Calcium oxide
Hydrogen
Calcium hydroxide
Calcium chloride
__________ is the chemical formula of Calcium chloride.
CaCl
CaCl2
Ca2Cl
None
Chlorate ion has charge equal to ____________.
+1
-1
+2
-2
Magnesium reacts with oxygen and forms____________.
Magnesium dioxide
Magnesium trioxide
Magnesium oxide
The formula of Hydrogen peroxide is __________.
H2O4
H2O3
H2O2
H3O4