10% NaCl is called
Buffer solution
Acidic solution
Brine solution
Basic solution
Phenolphthalein is a
Natural indicator
Olfactory indicator
Synthetic indicator
Universal indicator
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
Rock salt is
Pure NaCl
Impure NaCl
10% NaCl
NaCl crystals
In FeSO4 7H2O , H2O represents
Water
Water content
Water of crystallization
Solution
The acid which is produced in the stomach helps in digestion of food is
HNO3
H2SO4
HCl
H2S2O7
_________ can be used as a fire extinguisher .
NaHCO3
Na2CO3
CaOCl2
Na2SO4
Substances which are sour to taste are
Bases
Acids
Salts
Neutral solutions
Slaked lime is
CaO
CaCo3
CaCl2
Ca (OH ) 2
The strength of basic substance is represented by
pH
POH
Pavling scale
PS
