_________ can be used as a fire extinguisher .
NaHCO3
Na2CO3
CaOCl2
Na2SO4
Substances which are sour to taste are
Bases
Acids
Salts
Neutral solutions
Bleaching powder is
CaO
CaOCl
CaCl2
Phenolphthalein is a
Natural indicator
Olfactory indicator
Synthetic indicator
Universal indicator
The pH of human blood is
7
7.3
7.5
6.5
When NaCl is electrolysed , the gas liberated at anode is
H2
O2
Na
Cl2
An example for natural indicator is
Turmeric
Methyl orange
Eosin
Phenolphthalein
Chlorides of lime is
NaCl
A synthetic indicator is
NaOH
Beetroot
When the pH value is less than 7 , then the solution is
Basic
Natural
Salt
Acidic
