What is the chemical symbol of calcium?
Ca
Cu
C
Kr
Which is the variable valency of Iron
1,2
2,3
1,3
2,4
Which of the following molecular formula denotes sodium carbonate?
CH3COOH
Na2CO3
K2CO3
Na2SiO3
Empirical formula of Hydrogen peroxide .
CH
C6H6
H2O2
OH
Formula of cupric oxide
Cu2O
CuO
FeO
Fe2O3
Valency of Mg in Magnesium chloride
2+
5
2-
3+
H2O represents _______?
One molecule of water
Two molecule of Hydrogen and one molecule of oxygen
Two molecule of water
None of these
Example for anion ?
Barium
Aluminum
Arsenic
Carbonate
Which of the following elements represented symbol "Ag"?
Gold,
Silver
Iron
Antimony
Valency of sulphate in compound aluminum sulphate?
3-
1+
