2. Sample Papers
  3. 7th Class
  4. Science

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

  • question_answer
    Which one of the following is an acid?

    A) Calcium hydroxide

    B) Ammonium hydroxide

    C) Sodium carbonate

    D) Magnesium hydroxide

    E) None of these

    Correct Answer: E

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