Which of the following substance is a natural indicator?

None of the above

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Phenolphthalein

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Turmeric

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Litmus

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Solution

The correct option is C
Turmeric

Turmeric is a natural indicator. It contains the substance curcumin which changes colour with pH. Turmeric is naturally yellow.

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Similar questions

Indicators are substances that indicates whether the substance is acidic in nature.

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