Ozone is used for purifying water because

Options

A. It dissociates and release oxygen
B. Do not leave any foul smell like chlorine
C. Kills bacteria 'cyst' fungi and acts as a biocide
D. All of the above

Answer

D

Explanation

Ozone is used to purify water `rarr` Ozone kills bacteria, cysts, fungi, mold, parasites, viruses, contaminates etc. It is one of the effective way of eliminating microorganism in the water. Ozone also oxidizes toxins and odours. `O_3` is most effective oxidant (secondary to `F_2` ). It inactivates and oxidizes organic matter,contaminates, pesticides, viruses and bacteria faster than chlorine. `O_3` do not form TMH which have unpleasant odour and are also carcinogenic. `O_3` is very good biocide. Ozone also absorb UV radiation.