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प्रश्न
What is done to make drinking water clean and safe?
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उत्तर
Methods of settling and filtering will make the water clean. For making it safe, it is boiled for some time.
संबंधित प्रश्न
Use your brain power!
How should roads and footpaths be built to make rainwater seep into the ground?
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?
Find out the wrong statement and write it in its correct form.
Chlorination is a commonly used chemical method for killing germs in water.
Find out the wrong statement and write it in its correct form.
Water that is suitable for drinking is called soft water.
Explain the traditional ways of purifying water to make it fit for drinking.
Which of the following is a part of inorganic impurities of the sewage?
Washing soda is used to remove permanent hardness of water.
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.
