Question

Disinfection of water done by- *

Chlorine

ultra violet rays

Alum

all of them​

Answer 1

Answer:

all of them

is the correct answer.

Explanation:

Chlorination, ozone, ultraviolet light, and chloramines are primary methods for disinfection. However, potassium permanganate, photocatalytic disinfection, nanofiltration, and chlorine dioxide can also be used. Organic material is naturally present in water.

Hope this answer helps you!

Answer 2

Answer:

answer is all of them

Explanation:

and hope my answer will help you