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10th Class Science Sample Paper Science Olympiad Model Test Paper-1

  • question_answer
    Give two examples of group 17 elements.         

    A) Helium and Neon                         

    B) Fluorine and Chlorine                        

    C) Sodium and Potassium                    

    D) Calcium and Magnesium

    E) None of these

    Correct Answer: B

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