What are Indicators?

Last updated at April 28, 2026 by

Indicators are substances that show different colours in acidic and basic solutions.
Example
— Litmus paper, turmeric, red rose petals.
We use indicators to test whether a substance is acidic or basic.
Let's learn about these in detail step by step.

Indicators Purpose = Show different colours in acids and bases Natural = Litmus, turmeric, red rose petals Synthetic = Made in laboratories Use = Test whether substance is acidic or basic
Exploring Substances: Acidic, Basic, and Neutral 2.1 Nature - Our Science Laboratory 2.2 Neutralisation 2.3 Neutralisation in Everyday Life
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