(A) Ammonia (X)
(B) Dissolved oxygen (X)
(C) Carbon dioxide ()
(D) All (X)
Answers: Chlorination of water may be harmful if the water contains Carbon dioxide.
(A) Ammonia (X)
(B) Dissolved oxygen (X)
(C) Carbon dioxide ()
(D) All (X)
Answers: Chlorination of water may be harmful if the water contains Carbon dioxide.
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