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7th Class Science Sample Paper Science Olympiad Model Test Paper-2

  • question_answer
    Which one of the following is a group of two strong acids and one weak base?

    A) Acetic acid. Hydrochloric acid, Sodium hydroxide

    B) Sulphuric acid, Nitric acid. Potassium hydroxide

    C) Hydrochloric acid. Nitric acid. Ammonium hydroxide

    D) Citric acid, Tartaric acid. Sodium hydrogen carbonate

    E) None of these

    Correct Answer: C

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