Which of the following is correct regarding anthocyanin pigments present in red cabbage and rose petals?

They are blue in acidic and red in basic solutions.

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They are made artificially.

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They act as indicators.

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They can't be used as indicators.

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Solution

The correct option is C They act as indicators.
Anthocyanin pigments are present in many plant parts and are natural indicators. They are red in acidic and blue in basic solutions. They are water-soluble pigments that may appear red, purple, or blue depending on the pH.

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