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

7th Class Science Sample Paper Science Olympiad Model Test Paper-18

  • question_answer
    _______are groups of atoms of different elements that combine as single unit, but cannot exist independently.

    A) Radicals

    B) Isotopes

    C) Isobars

    D) All of these

    E) None of these

    Correct Answer: A

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