Give the important applications of `O_(3)`

Explanation

(A) As a germicide and disinfectant for sterilising water improving the atmosphere of crowded places.
(B) for detecting the position of double bond in the unsaturated organic compoiunds.
(C) In mfg. of artificial silk, synthetic camphor, `KMnO_(4)` etc. It is also used for bleaching oil, ivory, flour starch etc.