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Which of the following is a non-metal that is added to swimming pools to kill germs?
1. Chlorine
2. Oxygen
3. Nitrogen
4. Iodine

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Correct Answer - Option 1 : Chlorine

The correct answer is Chlorine.

  • Many nonmetals are used as disinfectants such as Iodine and chlorine.
  • Chlorine is used to disinfect water for all-purpose that is a swimming pool and water to drinking water.
  • It kills bacteria and other jobs which are present in the water.
  • It also treats mold algae bacteria and other organisms which are present in the water.
  • The estimate of chlorine used in the treatment of water is four parts per million.
  • When chlorine is added to the swimming pool it forms a weak acid which is known as hypochlorous acid that kills bacteria such as Salmonella and E. Coli and it even kills germs that cause viruses such as diarrhea and swimmer's ear.
  • The hypochlorite ion also referred to as bleach is very active in killing pathogens.

Chlorine
  • The symbol Cl and atomic number 17.
  • The second-lightest of the halogens,
Oxygen
  • The symbol O and atomic number 8.
  • It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal,
Nitrogen
  • The symbol N and atomic number 7.
  • It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772.
Iodine
  • The symbol I and atomic number 53.
  • The heaviest of the stable halogens,

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