Question

write the uses of universal indicators

Answer 1

A universal indicator is a pH indicator composed of a solution of several compounds that exhibits several smooth colour changes over a pH value range from 0 to 14 (it may be negative or higher depending on the concentration) to indicate the acidity or alkalinity of solutions, where 7 indicates neutral.
pH is used to determine acid or base,like pH>7 is basic and pH<7 is acidic and pH=7 is neutral.
I guess.....

Answer 2

I don't know about this thing