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  3. 9th Class
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9th Class Science Sample Paper Science Olympiad Model Test Paper-7

  • question_answer
    Calculate the number of gram molecules present in 664 g of\[N{{a}_{2}}S{{O}_{4}}.10{{H}_{2}}O\].

    A) 2.06

    B)  3.05

    C)  1.5

    D)  4.6

    E)  None of these

    Correct Answer: A

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