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) $CaOCl_2$
(b) $Ca(OCl)_2$
(c) $CaO_2 Cl$
(d) $CaCl_2$
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Solution:
- (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 $Ca(OCl)_2 .2 Ca(OH)_2$ and dibasic calcium chloride $CaCl_2 \cdot 2 Ca(OH)_2$.
