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Q. Assertion Bleaching powder is a mixed salt.
Reason In the presence of $COCl _{2}$, bleaching powder decomposes to give $CaCl _{2}$ and $O _{2}$.

AIIMSAIIMS 2009

Solution:

Bleaching powder is a mixed salt of calcium hypochlorite $\left[ Ca ( ClO )_{2}\right]$, calcium chloride, $CaCl _{2}$ and calcium hydroxide $\left[ Ca ( OH )_{2}\right]$. In presence of cobalt chloride, it decomposes into $CaCl _{2}+ O _{2} .$