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Chemistry miscellaneous
  1. Bleaching powder is prepared by passing :
    1. Chlorine over slaked lime
    2. Oxygen over slaked lime
    3. Carbon dioxide over slaked lime
    4. Chlorine over quick lirne
Correct Option: A

Calcium hypochlorite (bleaching powder) is manufactured by the calcium process: 2Cl2 + 2Ca(OH)2 (slaked lime) ® Ca (OCl)2 + CaCl2 + 2H20. Bleaching powder is actually a mixture of calcium hypochlorite and the basic chloride with some slaked lime.


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