Safe Drinking Water


 
 
Concept Explanation
 

Safe Drinking Water

Safe drinking water: We can prevent exposure to water-borne diseases like typhoid, cholera and hepatitis by providing safe drinking water. The sources of drinking water are usually rivers, ponds or underground sources. Drinking water should be filtered to remove suspended particles and treated (e.g., with chlorine) to kill bacteria.

How to make water safe for drinking: 

  • Boiling: Boiling of the water kills most of the disease causing microbes which reduces the risk of infection.
  • Use of iodine solution, tablets and crystals: Iodine has the ability to kill the viruses and bacteria. They are light weight and easy to use but not suitable for pregnant women.
  • Use of chlorine drops: It has the abilty to kill the bacteria in the water. Excess amount of chlorine can be poisnous.
  • Use of water filters: The filters help to remove the bacteria. The filters need to be cleaned after use.
  • Use of UV rays: It looks like a small flashlight. You just swish it around in the water for a few minutes and the bacteria can already be killed.
  • Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Why boiling is a safe way to clean water ?

    Right Option : D
    View Explanation
    Explanation
    Question : 2

    Which of the following method cannot be used to purify water ?

    Right Option : D
    View Explanation
    Explanation
    Question : 3

    Which of the following are correct :

    (a) Boiling of the water kills most of the disease causing microbes which reduces the risk of infection.

    (b) Diseases like typhoid, cholera and hepatitis by providing safe drinking water.

    (c) Drinking water should not be filtered to remove suspended particles and treated (e.g., with chlorine) to kill bacteria.

    Right Option : A
    View Explanation
    Explanation
     
     
    Related Videos
    Language - Hindi/English


    Students / Parents Reviews [20]