2. Sample Papers
  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Olympiad Model Test Paper-12

  • question_answer
    Calculate the molecular mass of sodium sulphate, \[N{{a}_{2}}S{{O}_{4}}\].

    A) 130 u

    B) 132 u

    C) 140 u

    D) 142 u

    E) None of these

    Correct Answer: D

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