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प्रश्न
Find out the wrong statement and write it in its correct form.
Chlorination is a commonly used chemical method for killing germs in water.
पर्याय
True
False
उत्तर
This statement is True.
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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?
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.
Water which is suitable for drinking is called soft water.
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 |
