An example for natural indicator is
Turmeric
Methyl orange
Eosin
Phenolphthalein
When NaCl is electrolysed , the gas liberated at anode is
H2
O2
Na
Cl2
A synthetic indicator is
NaOH
Beetroot
A weak acid is
HCL
H2SO4
HNO3
Acetic acid
When the pH value is less than 7 , then the solution is
Basic
Natural
Salt
Acidic
Substances which are sour to taste are
Bases
Acids
Salts
Neutral solutions
Slaked lime is
CaO
CaCo3
CaCl2
Ca (OH ) 2
Washing soda is
NaHCO3
Na2CO3
Na2SO4
NaCl
_________ can be used as a fire extinguisher .
CaOCl2
Chlorides of lime is
CaOCl