What are acid-base indicators used for? Give some examples of naturally occurring acid-baseindicators.

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Solution

Substances that are used to differentiate between an acid and a base are called acid-base indicators.

Acid-base indicators change their smell or colour when added to an acidic solution or a basic solution. Thus they help us in deciding whether a given solution is acidic or basic in nature.

Some of the naturally occurring indicators are red cabbage, litmus, turmeric, and more.

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