Question

Bacteria in drinking water cause a number of diseases. Which of the following methods kills most of the bacteria in drinking water?  Refrigeration Churning Boiling Sedimentation​

Answer 1

Answer:

churning kill most of the bacteria in drinking water

Answer 2

Boiling kills most of bacteria in drinking water.

1. Water purification is defined as the process of removing unwanted contaminants from water, in order to make it suitable for drinking.
2. Refrigeration and churning are not the method of water purification.
3. Sedimentation is physical water treatment method where solid particles are seperated from water. This is based on the effect of gravity. This method does not deals with microbes.
4. Boiling is an effective method as high temperature kills the microbes.