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9th Class Science Sample Paper Science Olympiad Model Test Paper-19

  • question_answer
    Calculate the percentage of Fe in \[F{{e}_{2}}{{(C{{O}_{3}})}_{2}}\](Given; Atomic mass of \[Fe=56,\] \[C=12,\] \[O=16\]).

    A) 48.28%

    B) 51.72%

    C) 28.06%

    D) 21.06%                  

    E) None of these 

    Correct Answer: A

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