JEE Main Chemistry question

Ozone is used for purifying water because [BCECE 2008]

(A)It dissociates and releases oxygen
(B)It does not leave any foul smell like chlorine
(C)It kills bacteria, cysts, fungi and acts as a biocide
(D)All of the aboveCorrect

Answer: (D)

Solution

Ozone purifies water through several complementary actions: it decomposes to release nascent oxygen (a strong oxidant/disinfectant), it leaves no lingering chemical odour

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Question ID VK-145744