2. Questions Bank
  3. 9th Class
  4. Science
  5. Natural resources

9th Class Science Natural resources Question Bank Natural Resources

  • question_answer
    A triatomic molecule having three atoms of oxygen is:

    A) Elemental oxygen          

    B) Ozone

    C) Tetra oxygen     

    D)        Water molecule

    E) None of these

    Correct Answer: B

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