_________ can be used as a fire extinguisher .
NaHCO3
Na2CO3
CaOCl2
Na2SO4
Phenolphthalein is a
Natural indicator
Olfactory indicator
Synthetic indicator
Universal indicator
Slaked lime is
CaO
CaCo3
CaCl2
Ca (OH ) 2
Baking soda is
NaCl
10% NaCl is called
Buffer solution
Acidic solution
Brine solution
Basic solution
Chlorides of lime is
CaOCl
Hardness of water is due to the presence of chlarides and sulphate of
Tin and lead
Calcium and Magnesium
Barium and Gallium
Na and K
In FeSO4 7H2O , H2O represents
Water
Water content
Water of crystallization
Solution
When NaCl is electrolysed , the gas liberated at anode is
H2
O2
Na
Cl2
When the pH value is less than 7 , then the solution is
Basic
Natural
Salt
Acidic
