Which of the following statements is true about \( \mathrm{Ca}(\mat...

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Which of the following statements is true about \( \mathrm{Ca}(\mathrm{OH})_{2} \) ?
(i) It is used in the preparation of bleaching powder
\( \mathrm{W} \)
(ii) It is a light blue solid
(iii) It does not possess disinfectant property.
(iv) It is used in the manufacture of cement.
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