Give two important uses of washing soda and baking soda.
(a) Two important uses of washing soda:
(i) It is used in the manufacture of soap and glass.
(ii) It is used to remove the permanent hardness of water.
(b) Two important uses of baking soda:
(i) It is used for making baking powder.
(ii) It is used in soda-fire extinguishers.