2. Sample Papers
  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Olympiad Model Test Paper-2

  • question_answer
    Which of the following represents the correct formula of ozone?

    A) \[Ozn\]

    B) \[{{O}_{2}}Zn\]

    C) \[{{O}_{3}}Zn\]

    D) \[{{O}_{3}}\]

    E) None of these

    Correct Answer: D

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