Name the sodiuntsalt which ts used for soltenng hard wateWhut is the formula od Plaster of Parrs?Explain how bleaching powder acts as an oxidising agetキー1 low us washing soola used in the softening of hard witer",. What happens when washrig soda rs kept exposed to ar" what I'·he phenomenon calledName the process generaily used for the manufacturc efsausbc soda Why is tisis precess called chlor-alkai process?-Η How splaster of Pansrepai ed ? Why is i' used foi .et ting fract..re.1hones ..12 fa) What is baking powder'How does it make the cake coft and spongy(b) In addirion to sodium hy drogen carhonate bal ing rowlers contain a sutystanceNarnc the substance N and whaits role in baking powder1. How is bleaching of fabric done? EAplain the difterent steps imvolve14. What happens when(i) watcr is added to plaster of laris,(n) gypsum zs lleatcul to temperalure of 500 K.(im) bleachng powder is treated with dil HCI?IS, (a) How is washing soda manufactured by Solvay's process(b) Why is washing soda used for softening hard water ?