Which household technique is commonly used to remove all the microorganisms present in the water ?

Options

A. Boiling
B. Using chlorinated tablets
C. Using electric filter
D. All of the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a household technique that is effective in removing microorganisms from water. Microorganisms can include bacteria, viruses, and protozoa, which can be harmful if ingested.

2. **Identifying Common Household Techniques**: There are several methods that can be used at home to purify water. Some of the common techniques include boiling, filtration, and chemical disinfection.

3. **Boiling Water**: One of the most effective and commonly used methods to kill microorganisms in water is boiling. When water is boiled, it reaches a temperature of 100 degrees Celsius (212 degrees Fahrenheit), which is sufficient to kill most bacteria, viruses, and parasites.

4. **Filtration**: Another method is using water filters, which can remove many microorganisms from water. However, not all filters are capable of removing all types of microorganisms, so it is important to choose a filter that is specifically designed for that purpose.

5. **Chemical Disinfection**: Chemical methods, such as using chlorine or iodine tablets, can also be used to disinfect water. These chemicals kill microorganisms but may leave a taste or odor in the water.

6. **Conclusion**: Among these techniques, boiling water is the most common household method used to ensure that all microorganisms are effectively removed from the water.

**Final Answer**: The household technique commonly used to remove all the microorganisms present in water is boiling.

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