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प्रश्न
Explain the traditional ways of purifying water to make it fit for drinking.
उत्तर
The various traditional ways of purifying water to make it fit for drinking are as follows :
- By filtering This is a physical method of removing impurities. A popular household water filter is a candle type water filter.
- By boiling When water is heated, it boils at a temperature of 100°C. At this high temperature, all the harmful microorganisms (or germs) present in water are killed and it becomes absolutely safe for drinking. Many household use boiling as a method for obtaining safe drinking water.
- Chlorination It is a commonly used chemical method for purifying water. It is done by adding chlorine tablets or bleaching powder to the water. Chlorine kills all the harmful microorganism (or germs) present in water and makes it absolutely safe for drinking.
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संबंधित प्रश्न
What is done to make drinking water clean and safe?
What works are undertaken to make water available even after the rainy season?
Which, of the following procedures will give you water free from all impurities?
Which of the following is a part of the inorganic impurities of the sewage?
Why are open drains a concern?
The process of adding chlorine in adequate amounts to water is called ______.
Washing soda is used to remove permanent hardness of water.
Temporary and permanent hardness can be removed by the method of boiling.
Match the following:
| 1. | The density of pure water | a. | Inflammable air |
| 2. | Henry Cavendish | b. | Cathode |
| 3. | Hydrogen | c. | 1 g/cm3 |
| 4. | Negative carbon electrode | d. | Hydrogen |
Name the chemical which converts chlorides and sulphates into insoluble carbonates.
