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

  • question_answer DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 Three different substances were taken and tested with litmus paper. The results are given below. Based on the results answer the questions 43 to 48.
    Type of Litmus X Y Z
    Red litmus turns blue no change no change
    Blue litmus no litmus turns red no change
    What could be the substance Z?

    A) Water              

    B) Salt

    C) Either A or B

    D) Either an acid or a base

    Correct Answer: C

    Solution :

    Both salt and water are neutral towards litmus.

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