Match the important chemical given in column (A) with the chemical formulae given in Column (B).
`{:("Column (A) Column (B)"),("(a) Plaster of Paris (i)" Ca(OH)_(2)),("(b) Gypsum (ii)"CaSO_(4) .(1)/(2)H_(2)O),("(c) Bleaching powder (iii)" CaSO_(4).2H_(2)O),("(d) Slaked lime (iv)"CaOCl_(2)):}`

Explanation

`{:("Column (A), Column (B)"),("(a) Plaster of paris, (ii)" caSO_(4).(1)/(2)H_(2)O),("(b) Gypsum (iii)"CaSO_(4) .2H_(2)O),("(c) bleaching powder (iv)" CaOCl_(2)),("(d) Slaked lime (i)"Ca(OH)_(2)):}`