what is indicator. write an example
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Explanation:
Acid-base indicators are chemicals used to determine whether an aqueous solution is acidic, neutral, or alkaline. Because acidity and alkalinity relate to pH, they may also be known as pH indicators. Examples of acid-base indicators include litmus paper, phenolphthalein, and red cabbage juice.
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Explanation:the substance used for identifying whether a substance is acid or basic. Examples are : turmeric - natural indicator, phenolphthalein - synthetic indicator
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