Give two important uses of washing soda and baking soda.

(N/A) Two important uses of washing soda and baking soda are as follows:
$(1)$ Washing soda:
$(a)$ It is used in glass,soap,and paper industries.
$(b)$ It is used to remove permanent hardness of water.
$(2)$ Baking soda:
$(a)$ It is used as baking powder. Baking powder is a mixture of baking soda and a mild acid known as tartaric acid. When it is heated or mixed in water,it releases $CO_{2}$ that makes bread or cake fluffy.
$(b)$ It is used in soda-acid fire extinguishers.