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9th Class Science Atoms and Molecules Question Bank 9th CBSE Science Atoms and Molecules

  • question_answer
      Which of the following symbols of elements are incorrect? Give their correct symbols. (a) Cobalt      CO                (b) Carbon c (c) Aluminium AL             (d) Helium He (e) Sodium    So                  

    Answer:

       (a) Incorrect, the correct symbol of cobalt is Co (b) Incorrect, the correct symbol of carbon is C (c) Incorrect, the correct symbol of aluminium is Al (d) Correct (He) (e) Incorrect, the correct symbol of sodium is Na.


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