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
Barium is _______ type of electro positive
Monovalent electro positive
Divalent electro positive
Trivalent electro positive
Tetravalent electro positive
Molecular mass of carbon dioxide is
16
32
44
28
Which element represented by symbol " K "
Copper
Krypton
Sodium
Potassium
Example for basic radical is
Magnesium
Bromide
Chloride
Silicate
Variable valency of gold is
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 cation
Ammonium
Acetate
Sulphate
Fluoride
Empirical formula of Hydrogen peroxide .
CH
C6H6
H2O2
OH
