A) it releases oxygen on dissociation
B) it does not give unpleasant smell like chlorine
C) it acts as bactericide and destroys the bacteria, fungi etc
D) All of the above
Correct Answer: D
Solution :
Ozone is used in the purification of water because it destroys the bacteria, fungi, parasites. It does not produce unpleasant smell. It is also effective oxidant. It absorbs ultraviolet rays.
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