Question

2.6
(a) What is universal indicator? ​

Answer 1

Answer:

a mixture of dyes that changes colour gradually over a range of pH and is used (especially as indicator paper) in testing for acids and alkalis.

Explanation:

here is ul answer @

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Answer 2

A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions. ... Experiments with Yamada's universal indicator are also described in the Journal of Chemical Education.