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Explain how exposure of water to air and...

Explain how exposure of water to air and sunlight purify water? To what extent this method is effective?

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Air contains oxygen. As oxygen helps in burning, when water is exposed to air and sunlight, the germs are burnt to death. That is why water in town reservoirs is exposed to air and sunlight over a large surface area.
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PEARSON IIT JEE FOUNDATION-WATER-A WONDER LIQUID -Test Your Concepts (Short Answer)
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  2. In cold countries hot water pipes are arranged inside the concrete flo...

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  3. 100 g of water and 100 g of steam are comidcred at 100^(@)C. What is t...

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  4. Calculate the heat required to convert 250 g of ice into water at the ...

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  5. 50 g of pure water is taken at 20^@C. What is the amount of heat requi...

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  6. Water in swimming pools remains cool even during hot summer. Give reas...

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  7. Some ice cubes are kept in a beaker and a ther- mometer is placed in i...

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  8. One day, Rashnu went to a market along with her father on a hot aftern...

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  9. Water is considered as the universal solvent. Give reason

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  10. Between chlorination and ozonization of water, which is a more effecti...

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  11. Some amount of purple coloured potassium per- manganate is added to a ...

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  12. Distilled water is not fit for consumption. Give reason.

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  13. The solubility of a certain substance does not change with temperature...

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  14. Does the size of the solute particles affect the solubility of the sub...

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  15. How can heating affect the formation of a solution?

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  16. Explain how exposure of water to air and sunlight purify water? To wha...

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  17. A river water sample is poured in four containers and subjected to fou...

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  18. A river water sample is poured in four containers and subjected to fou...

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  19. A river water sample is poured in four containers and subjected to fou...

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  20. How do fertilizers cause water pollution?

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