[" 47.State two does enter (b) Chlorine "],[" (a) Sodium hydroxide name of the compound CaOCl_? "],[" 48.What is the common name of the compound CaOCl_2? "],[" (b) Name the raw material used for the preparation of plaster of Paris."],[" (b) Name the raw material used for the preparation making casts for broken lim "],[" (c) Which property of plaster of Paris is utilising drinking water supply."],[" - (d) Explain why chlorine is used for sterilising drinking water supply."]