Cations are ___________.
electropositive
electronegative
neutral
none
__________ gms of oxygen react with 240gms of magnesium. (The chemical reaction is 2Mg+O2→2MgO).
120
80
160
90
Hg is the symbol of ___________.
mercury
gold
silver
tin
____________ is the chemical formula of ammonium chloride.
NH2Cl
NH4Cl
NH3Cl
N2HCl
Calcium hydroxide contains one atom of calcium, two atoms of hydrogen and ________ atoms of oxygen.
1
3
2
4
When Barium chloride reacts with sulphuric acid gives BaSO4 and __________.
HCl
Cl2
H2
SO2
__________ is a tetravalent radical.
Hydrogen
Magnesium
Boron
Silicon
__________ is the chemical formula of Calcium chloride.
CaCl
CaCl2
Ca2Cl
None
Calcium carbonate reacts with Hydrochloric acid and gives _________ ,water and CO2..
Calcium oxide
Calcium hydroxide
Calcium chloride
Zinc reacts with HCl to give zinc chloride and ____________.
Chlorine
Zinc
