Question

What are Indicators ?
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Answer 1

ᴀɴsᴡᴇʀ -

A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH of the solution can be determined visually. Hence, a pH indicator is a chemical detector for hydronium ions or hydrogen ions in the Arrhenius model.

ᴛʜᴀɴᴋs~

Answer 2

Explanation:

An indicator is a substance that changes its color in acidic and basic medium. An indicator shows one color in an acidic medium and different colors in a basic medium.