Question

Chemical disinfection of drinking water can be done using:
1. bromine
2. fluorine
3. chlorine
4. iodine

Answer 1

Correct Answer - Option 3 : chlorine

The correct answer is chlorine.

• Chlorine is one of the most commonly Chemical disinfection for drinking water.
• It is a chemical disinfection method that uses various chlorine or chlorine-containing substances for the oxidation and disinfection of the potable water source.
• The goal of disinfection of public water supplies is to eliminate the pathogens responsible for waterborne diseases.
• The transmission of diseases such as typhoid and paratyphoid fevers, cholera, salmonellosis, and shigellosis can be controlled with treatments that substantially reduce the total number of viable microorganisms in the water.
• Chlorine can be applied for the deactivation of most microorganisms, and it is relatively cheap.

• Chlorine was first discovered in Sweden in 1744.
• In 1835, chlorine was used to remove odours from the water, but it wasn't until 1890 that chlorine was found to be an effective tool for disinfecting, reducing the amount of disease transmitted through water.

•  Halogen is the Six nonmetallic elements that constituted a group of 17 of the periodic table.
• The Halogen elements are fluorine (F), chlorine (Cl), Bromine (Br), Iodine (I), astatine (at), and Tennessine (Tn).