Give two important uses of washing soda and baking soda.

Uses of washing soda : (i) Washing soda is used in glass, soap and paper industries. (ii) It is used for removing permanent hardness of water. Uses of baking soda : (i) Baking soda is used as an antacid in medicines to remove acidity of the stomach. (ii) Baking soda is used for making baking powder (used in making cakes, bread, etc.).