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

  • question_answer Identify the two kinds of litmus paper.

    A)  Blue and red    

    B)  Blue and yellow

    C)         Red and green

    D)         Yellow and red

    Correct Answer: A

    Solution :

    Blue and red are the two kinds of litmus papers.

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