Q 5.     Give the names of the elements present in the following compounds.

             (a) Quick lime

             (b) Hydrogen bromide

             (c) Baking powder

             (d) Potassium sulphate.

Answers (1)

The names of the elements present in the given compounds are :

 (a) Quick lime :

      Cao = Calcium and Oxygen.

 (b) Hydrogen bromide

       HBr = Hydrogen and Bromine.

 (c) Baking powder

      NaHCO_3 = Sodium, Hydrogen, Carbon, and Oxygen.

 (d) Potassium sulphate.

      K_2SO_4 = Potassium, Sulphur, and oxygen.

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