____ is a halogen used in gaseous and liquid form for large-scale disinfection of drinking water and sewage.
A. Iodine
B. Chlorine
C. Bromine
D. Fluorine
E. All of the choices are correct.
Answer: B
____ is a halogen used in gaseous and liquid form for large-scale disinfection of drinking water and sewage.
A. Iodine
B. Chlorine
C. Bromine
D. Fluorine
E. All of the choices are correct.
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.