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JEE Main & Advanced Chemistry Analytical Chemistry Question Bank Volumetric Analysis

  • question_answer
    The pink colour of phenolphthalein in alkaline medium is [CPMT 1990]

    A) Due to negative form

    B) Due to positive form

    C) Due to \[O{{H}^{-}}\] ions

    D) Due to neutral form

    Correct Answer: D

    Solution :

    Here KMnO4 itself works as an indicator.


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