Question

what are universal indicator ? why these consider the best imdicator?

Answer 1

the indicators which tells us wether the solution is acidic or basic and tells us about concentration of hydrgen ions are called universal indicators.
these are considered best because the help us in telling wethere acid is strong or weak
base is strong or weak or the solution is neutral..

Answer 2

Used for determining the acidic or basic nature of substances.
These are considered best because the ph can be dtermined.