Q.

Bleaching powder loses its power on keeping for a long time because

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a

it changes into calcium hypochlorate

b

it changes into calcium chloride and calcium hydroxide

c

it absorbs moisture

d

it changes into calcium chloride and calcium chlorate

answer is D.

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Detailed Solution

large 2Ca{left( {OH} right)_2}; + ;2C{l_2}; to ;mathop {mathop {Ca{{left( {OCl} right)}_2}}limits_{Calcium;hypo;Chlorite} }limits_{Bleeching;powder} ; + ;2{H_2}O


Bleaching powder on long standing undergoes autooxidation which results in the formation of CaCl2 and Calcium chlorate as products
 

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