__________ is the chemical formula of Calcium chloride.
CaCl
CaCl2
Ca2Cl
None
____________ exists as a diatomic molecule .
Neon
Argon
Fluorine
Mercury
The formula of Hydrogen peroxide is __________.
H2O4
H2O3
H2O2
H3O4
____________ is the chemical formula of ammonium chloride.
NH2Cl
NH4Cl
NH3Cl
N2HCl
Calcium carbonate reacts with Hydrochloric acid and gives _________ ,water and CO2..
Calcium oxide
Hydrogen
Calcium hydroxide
Calcium chloride
NaHCO3 is called _____________.
sodium carbonate
sodium bicarbonate
sodium tricarbonate
none
__________ gms of oxygen react with 240gms of magnesium. (The chemical reaction is 2Mg+O2→2MgO).
120
80
160
90
Zinc reacts with HCl to give zinc chloride and ____________.
Chlorine
Zinc
CO2 contains one atom of carbon and two atoms of oxygen, the atomic weight of carbon is 12 and the atomic weight of oxygen is 16. The molecular weight of CO2 is
22
36
44
59
Magnesium reacts with oxygen and forms____________.
Magnesium dioxide
Magnesium trioxide
Magnesium oxide
