b) NaOHag) Haq) NaCl(a)H,0(0). A solution of the substance X' is used for whitewashing.(a) Name the substanceX and write its formulab) Write the reaction of the substance X' with water.ns. (a) lhe substance·X, is calcium oxide (also called lime or quicklime). Its fo(b) CaO(s) + H:0() → Ca(OH)2(s)

b) NaOHag) Haq) NaCl(a)H,0(0). A solution of the substance X' is used

1.	b) NaOHag) Haq) NaCl(a)H,0(0). A solution of the substance X' is used for whitewashing.(a) Name the substanceX and write its formulab) Write the reaction of the substance X' with water.ns. (a) lhe substance·X, is calcium oxide (also called lime or quicklime). Its fo(b) CaO(s) + H:0() → Ca(OH)2(s)
Answer» (i)The substance ‘X’ which is used in white washing is calcium oxide or quick lime and its formula is CaO.(i)The reaction involved is