Question

What is a universal indicator? What is its advantage?

Answer 1

 A universal indicator is a mixed indicator of organic chemicals which not only shows whether the given solution is acidic or basic, but also shows the approximate pH values by giving a wide particular colour for a specific value of pH.The advantage of Universal Indicatorover litmus is that a wide range of colours is produced depending on the strength of the acid or alkali. TheUniversal Indicator is actually a mixture of several pH indicators. Universal indicator helps us to know wheather a substances isacidic or basic (weak or strong).

Answer 2

a mixture of dyes that changes colour frequently over a range of ph
it's advantage is that it displays various colour to indicate pH on pH scale