Chemistry
What are the three methods of removing germs from natural water? Explain.
Water
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Answer
The process of removing germs from water is called sterilization.
It can be done by following three methods :
- Boiling — Germs cannot exist at the temperature of boiling water. Therefore, prolonged boiling of water destroys them.
- Exposure to air and sunlight — Ozone present in air and sunlight kills the germs present in water.
- Chemical treatment — Chemicals like chlorine and ozone can kill the germs. Use of ozone to sterilise water is called ozonisation.
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