Which chemical is commonly added to drinking water supplies to kill harmful bacteria and pathogens?

Explanation

Chlorine is widely used to disinfect drinking water because it effectively kills bacteria, viruses, and other pathogens that cause waterborne diseases. This practice, known as chlorination, has been credited with dramatically reducing outbreaks of diseases like cholera and typhoid in cities with treated water supplies. Chlorine levels must be carefully controlled, since too much can be harmful and too little may not disinfect the water effectively. Explore more Everyday Science MCQs on mcqstutor to keep practicing.