Which of the following is the most widely used disinfectant in water – McqOptions

MCQOPTIONS

1.	Which of the following is the most widely used disinfectant in water treatment?
A.	Chlorine
B.	Irradiation of water by ultraviolet light
C.	Cation exchanger
D.	Coagulation
Answer» B. Irradiation of water by ultraviolet light

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