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

9th Class Science Sample Paper Science Olympiad Model Test Paper-11

  • question_answer
    The molecular mass of \[{{K}_{2}}C{{O}_{3}}\] is:

    A) 128 u

    B) 112 u

    C) 138 u

    D) 122 u

    E)  None of these

    Correct Answer: C

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