EVERYDAY SCIENCE

Detailed explanation-1: -Explanation for the correct answer: (C) kill the harmful micro-organisms: Chlorination is the process by which water is put in a chlorination tank and chlorine is added to it. Chlorine kills germs, harmful bacteria and destroys many other harmful substances present in water.

Detailed explanation-2: -Chlorine is fed into the water to kill pathogenic bacteria, and to reduce odor. Done properly, chlorination will kill more than 99 percent of the harmful bacteria in an effluent.

Detailed explanation-3: -Chlorine disinfection is reliable and effective against a wide spectrum of pathogenic organisms. Chlorine is effective in oxidizing certain organic and inorganic compounds. Chlorination has flexible dosing control. Chlorine can eliminate certain noxious odors during disinfection.

Detailed explanation-4: -Adding a diluted chlorine solution to municipal water is very effective at killing bacteria and viruses in wastewater known to cause certain diseases. Ease of use. Wastewater can be challenging to treat. Fortunately, chlorination is a simple and effective tactic that can easily be applied to municipal wastewater.

Detailed explanation-5: -Chlorine is a strong oxidizing disinfectant that has been used to treat drinking water supplies for more than 60 yr. The gas was named “chlorine” after the Greek word for green, “chloros, ” because of its characteristic color.