Question

What is universal indicator give any two universal indicators?

Answer 1

Indicator  Low pH colour           Transition pH range

Methyl red         Yellow                              4.8 – 6.0  

Bromothymol  blue Yellow                    6.0 – 7.6

Thymol blue        Yellow                             8.0 – 9.6

Phenolphthalein Colourless              8.3 – 10.0

Answer 2

universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour which detect several  changes over a wide range of pH values to indicate the acidity or alkalinity of the solutions.