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
Which of the following molecular formula denotes sodium carbonate?
CH3COOH
Na2CO3
K2CO3
Na2SiO3
Example for basic radical is
Magnesium
Bromide
Chloride
Silicate
What is the chemical symbol of calcium?
Ca
Cu
C
Kr
Example for cation
Ammonium
Acetate
Sulphate
Fluoride
Which of the following elements represented symbol "Ag"?
Gold,
Silver
Iron
Antimony
Empirical formula of Hydrogen peroxide .
CH
C6H6
H2O2
OH
Barium is _______ type of electro positive
Monovalent electro positive
Divalent electro positive
Trivalent electro positive
Tetravalent electro positive
Example for anion ?
Barium
Aluminum
Arsenic
Carbonate
Variable valency of gold is
1,2
1,3
2,3
3,5
