Multiple choice

In the tertiary treatment, which of the following gases can be used to kill the disease-causing organisms?

  1. Oxygen

  2. Hydrogen

  3. Ozone

  4. Nitrogen

  5. Helium

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

This is the correct option. In the tertiary treatment, ozone gas can be used to kill the disease-causing organisms.