Multiple choice

which one of the following is an effective alternative to chlorine for disinfecting wastewater?

  1. freon

  2. ammonia

  3. alcohol

  4. ozone

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ozone is a powerful oxidizing agent widely used as an alternative to chlorine for disinfecting wastewater because it effectively kills pathogens without leaving harmful chlorinated byproducts.