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7th Class Science Acids, Bases and Salts / अम्ल, क्षार एवं लवण Question Bank Self Test-4

  • question_answer
    Indicators are used to indicate the nature of the substance. Which one of the following is called natural indicator?

    A)  Phenolphthalein

    B)  Methyl

    C)  Litmus

    D)  All of these

    E)  None of these

    Correct Answer: C

    Solution :


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