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

  • question_answer
      Give the names of elements present in (a) Quick lime                    (b) Hydrogen bromide (c) Baking powder                 (d) Potassium sulphate 

    Answer:

                      (a) Quick lime (CaO) contains calcium and oxygen. (b) Hydrogen bromide (HBr) contains hydrogen and bromine. (c) Baking powder  contains sodium, hydrogen, carbon and oxygen. (d) Potassium sulphate contains potassium, sulphur and oxygen.


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