The sBlock Elements - Result Question 39

####45. Which one of the following is present as an active ingredient in bleaching powder for bleaching action?

[2011]

(a) CaOCl2

(b) Ca(OCl)2

(c) CaO2Cl

(d) CaCl2

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Solution:

  1. (b) Active ingredient in bleaching powder for bleaching action is Ca(OCl)2.

Bleaching powder is a mixture of calcium hypochlorite Ca(OCl)2, dibasic calcium hypochlorite Ca(OCl)2.2Ca(OH)2 and dibasic calcium chloride CaCl22Ca(OH)2.



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