Molecular mass of carbon dioxide is
16
32
44
28
Example for cation
Ammonium
Acetate
Sulphate
Fluoride
Formula of cupric oxide
Cu2O
CuO
FeO
Fe2O3
Valency of Mg in Magnesium chloride
2+
5
2-
3+
Variable valency of gold is
1,2
1,3
2,3
3,5
H2O represents _______?
One molecule of water
Two molecule of Hydrogen and one molecule of oxygen
Two molecule of water
None of these
Example for monovalent electro positive
Barium
Aluminium
Zinc
Which one is binary acid
H2SO4
HF
HNO3
Example for anion ?
Aluminum
Arsenic
Carbonate
Which is a balanced chemical equation?
Pb (NO3)2 → PbO + 2NO2 + O2
K2Cr2O7+HCI → KCl + CrCl3 + H2O +Cl2O2
2KNO3 → 2KNO2 +O2
H2O + Cl2 → HCl + O2
