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

  • question_answer Which of the following statements is correct?

    A) Hydrochloric acid turns red litmus to blue.

    B) Sodium hydroxide turns blue litmus to red.

    C) Both the above are correct.

    D) None of these is correct.

    Correct Answer: D

    Solution :

    Hydrochloric acid turns blue litmus red. Sodium hydroxide turns red litmus blue.

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