11th Class Chemistry The s-Block Elements

  • 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

    Answer:

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

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