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Explain why the freezing point, boiling ...

Explain why the freezing point, boiling point, heat of fusion and heat of vaporisation of water are higher as compared to the hydrides of the other members of same group (16).

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CHHAYA PUBLICATION-HYDROGEN-WARM UP EXERCISE
  1. Although the oxygen atom in water is sp^(3) hybridised, the value of H...

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  2. Explain why a molecule of water is polar in nature.

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  3. Explain why the freezing point, boiling point, heat of fusion and heat...

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  4. Explain why ice floats on water.

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  5. At which temperature the density of water is maximum and why?

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  6. Many electrovalent or ionic compounds and same non-electrolytes such a...

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  7. Water is very stable compound - why ?

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  8. Explain why water is called 'universal solvent?

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  9. Explain why water is called an 'amphiprotic solvent'. Establish this g...

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  10. What do you understand by'self-ionisation' or 'autoprotolysis' of wate...

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  11. Give examples of two reactions one in which water acts as an oxidising...

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  12. Which type of compounds undergo hydrolysis? Give examples.

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  13. What happens when steam is passed over red hot coke? Give suitable equ...

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  14. Water plays a significant role in controling the atmospheric and body ...

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  15. How does water stabilise an ion?

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  16. Why water is liquid at ordinary temperature?

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  17. How will you prove that a colourless liquid is water?

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  18. Indicate whether water undergoes oxidation or reduction during photos...

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  19. Cobalt chloride is blue in anhydrous state . In contact with water va...

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  20. What is heavy water? Why it is called so? State the major source of he...

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