Answer:
ACID
Acids are sour in taste.
Acids turn blue litmus red.
Acids do not change the colour of red litmus.
With china rose indicator, acids give dark pink colour.
Acids do not change the colour of turmeric indicator.
bases
Bases are bitter in taste.
Bases do not change the colour of blue litmus.
3.Bases turn red litmus blue.
With china rose indicator, bases give green colour.
Bases turn the colour of turmeric indicator to red.
