• # question_answer 56)   Which of the following statements is true about$Ca{{(OH)}_{2}}$? (a) It is used in the preparation of bleaching powder (b) It is a light blue solid (c) It does not possess disinfectant property (d) It is used in the manufacture of cement

(a)$Ca{{(OH)}_{2}}$, i.e., slaked lime is used to prepare bleaching powder with $C{{l}_{2}}$ gas. $Ca{{(OH)}_{2}}+C{{l}_{2}}\to Ca(OCl)Cl+{{H}_{2}}O$