Question

(a) Trope
4. In water purification, alum is added during the process of
(a) sedimentation (b) filtration (c) aeration (d) chlorination
Which of the following chemicals is used to kill germs during water purificati​

Answer 1

Answer:

CHLORINATION

Explanation:

I AM NOT SURE BUT WE USE CHLORIN

IN SWIMMING POOL SO THAT THE WATER IS CLEAN BY INFECTANTS AND AND BACTERIA GETS KILL

Answer 2

Explanation:

• filteration
• sedimentation