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प्रश्न
What works are undertaken to make water available even after the rainy season?
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
Use your brain power !
How should roads and footpaths be built to make rainwater seep into the ground?
Water which looks clean still has disease carrying ______ and ______ impurities.
(insects, microorganisms, particles, dissolved, harmful)
Find out the wrong statement and write it in its correct form.
Water which 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 the inorganic impurities of the sewage?
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.
