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प्रश्न
What works are undertaken to make water available even after the rainy season?
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उत्तर
- Different methods are adopted to make water available even after the rainy season.
- In places where large dams cannot be constructed, smaller reservoirs are made.
- Counterbunding, stopping water from the streams by building bunds, and similar such works are undertaken by the government and the local people.
संबंधित प्रश्न
What is done to make drinking water clean and safe?
Use your brain power!
How should roads and footpaths be built to make rainwater seep into the ground?
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.
______ from the air and sunlight destroy the germs present in 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.
