Disinfection of water is done by the use of which of the following gas?

Disinfection of water is done by the use of which of the following gas?

Options:

1) Nitrogen

2) Helium

3) Oxygen

4) Chlorine

Answer:

4) Chlorine

Other Details:

• Chlorine gas has been the primary disinfectant used in treating municipal water supplies worldwide from around 100 years
• Due to its high safety standards, chlorine is the most widely used disinfectant worldwide.