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What is the effect of impurities present...

What is the effect of impurities present in water on melting point and boiling point of water?

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ICSE-WATER-EXERCISE 3(A)
  1. Give the properties of water responsible for controlling the temperatu...

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  2. Water is a universal solvent'. Comment

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  3. What causes the violence associated with torrential rain ?

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  4. Which property of water enables it to modify the climate?

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  5. Density of water varies with temperature. What are its consequences ?

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  6. What is the effect of impurities present in water on melting point and...

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  7. How do fishes and aquatic animals survive in winters when the pond get...

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  8. The properties of water are different from the properties of the eleme...

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  9. How is aquatic life benefitted by the fact that water has maximum dens...

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  10. What are your observations and conclusion when tap water is boiled and...

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  11. What is the importance of dissolved salts in water ?

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  12. State the importance of the solubility of CO2 and O2 in water.

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  13. How is air dissolved in water different from ordinary air?

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  14. Explain why : Boiled or distilled water tastes flat.

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  15. Explain why : Ice at zero degree centigrade has greater cooling effe...

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  16. Explain the following: Why are the burns caused by steam more severe...

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  17. Explain why : Rivers and lakes do not freeze easily?

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  18. Explain why : Air dissolved in water contains a higher proportion of...

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  19. Explain why : If distilled water is kept in a sealed bottle for a lo...

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  20. Explain why: Rainwater does not leave behind concentric rings when bo...

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