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    Question

    A substance X turns the colour of red litmus blue, and

    it will change methyl orange-
    A Yellow Correct Answer Incorrect Answer
    B Colourless Correct Answer Incorrect Answer
    C Red Correct Answer Incorrect Answer
    D Pink Correct Answer Incorrect Answer

    Solution

    A Base is a substance that is bitter in taste and turns red litmus paper into Blue. • Indicator properties of bases: Indicator-Colour changes Red Litmus paper -Turns Blue Methyl orange-From orange to yellow Phenolphthalein-from colourless to pink

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