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10th Class Science Sample Paper Science Olympiad Model Test Paper-16

  • question_answer
    A, B and C are the elements of a Dobereiner's triad. If the atomic mass of A is 7 and that of C is 39. What would be the atomic mass of B?

    A) 32

    B) 46

    C) 23

    D) 92

    E) None of these

    Correct Answer: C

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