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प्रश्न
.................... is the purest form of natural water.
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उत्तर
Rain water is the purest form of natural water.
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संबंधित प्रश्न
State the importance of water cycle in nature.
Give balanced chemical equation for the reaction of water with Sodium oxide.
How is rain produced?
Explain why:
Air dissolved in water contains a higher proportion of oxygen.
Give a balanced equation for the following conversion:
Sulphur dioxide to sulphurous acid using a neutral liquid.
Differentiate between the following:
Natural water and treated water
Match the terms in List I with the correct answers in List II.
| List I | List II |
| 1. Solubility in a given solvent decreases with an increase in temperature. | A: Na2SO4.10H2O |
| 2. A white efflorescent crystal | B: NaOH |
| 3. A hygroscopic dehydrating agent | C: Ca(HCO3)2 |
| 4. A deliquescent alkali | D: conc. H2SO4 |
| 5. A substance present in temporary hard water | E: CaSO4 |
Write a few slogans of your own on the topic “Save Water”
Water changes to ice at ______.
Water polluted by various human activities causes a number of water borne diseases. Which of the following is not a water borne disease?
