Normally, which chemical is used to treat...

Question 1 of 2707066636eec28f7522a1c51c8d9

Normally, which chemical is used to treat water in order to ensure its safety for drinking?

Back

Question 1 of 27070

Q

Normally, which chemical is used to treat water in order to ensure its safety for drinking?

🔍 Key Concepts

• Potable water treatment on ships and ashore • Common disinfectants used to kill bacteria and viruses in drinking water • Difference between filtering water and disinfecting water

💭 Think About

• Which of these chemicals is widely known for killing germs in swimming pools and municipal tap water? • Which options are normal parts of the air we breathe, and which are specifically added to water to disinfect it? • Think about shipboard potable water systems: which chemical is commonly tested for residual levels to confirm water is safe?

✅ Before You Answer

• Identify which choice is commonly associated with disinfection rather than just presence in air or water • Recall which substance is often measured as a residual in drinking water systems • Eliminate choices that are primarily gases in air and not typically used as the main drinking water disinfectant