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    Question

    From which source is the purple dye known as litmus

    solution extracted?
    A Roses Correct Answer Incorrect Answer
    B Lichen Correct Answer Incorrect Answer
    C Blueberries Correct Answer Incorrect Answer
    D Beetroot Correct Answer Incorrect Answer

    Solution

    Litmus solution, used as a pH indicator, is derived from lichen—a symbiotic organism consisting of algae and fungi. This natural indicator changes color in response to the acidity or alkalinity of a solution.

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