(i) The substance ‘X’ which is used in whitewashing is quick lime or Calcium Oxide and its formula is CaO.
(ii) CaO + H2O → Ca(OH)2
(i) The substance ‘X’ which is used in whitewashing is quick lime or Calcium Oxide and its formula is CaO.
(ii) CaO + H2O → Ca(OH)2