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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.
विकल्प
True
False
उत्तर
This statement is True.
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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?
Water which looks clean still has disease carrying ______ and ______ impurities.
(insects, microorganisms, particles, dissolved, harmful)
Explain the traditional ways of purifying water to make it fit for drinking.
Why are open drains a concern?
The process of adding chlorine in adequate amounts to water is called ______.
______ from the air and sunlight destroy the germs present in water.
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 |
