7th Class Science Acids, Bases and Salts Question Bank Acids, Bases and Salts

  • question_answer Juice prepared from lemon is taken in a glass tumbler and water is added to it. Then a red litmus paper and a blue litmus paper were dipped into it. What changes were observed?

    A)  Red litmus paper turns blue.

    B)  Blue litmus paper turns red.

    C)  Red litmus paper becomes white.

    D)  Blue litmus paper becomes white.

    Correct Answer: B

    Solution :

    Lemon juice contains citric acid that turns blue litmus red.

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