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Why water is liquid at ordinary temperat...

Why water is liquid at ordinary temperature?

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CHHAYA PUBLICATION-HYDROGEN-WARM UP EXERCISE
  1. Water plays a significant role in controling the atmospheric and body ...

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  2. How does water stabilise an ion?

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  3. Why water is liquid at ordinary temperature?

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

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

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

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

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  8. All physical constants of heavy water are higher than the correspondin...

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  9. What amount of water should be electrolysed to get 1L of 99% pure D(2)...

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  10. Why concentration of D(2)O increases when electrolysis of water is car...

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  11. Explain why the reactions of D(2) O occur at a rate slower that the co...

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  12. How would you prepare deuterium peroxide (D(2)O(2)) ?

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  13. How will you prepare deuteroammonia (ND(3)) from N(2) ?

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  14. Write down two important uses of heavy water.

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  15. How will you prove that hypophoshporus acid (H(3)PO(2)) is a monobasic...

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  16. Sodium chloride is less soluble in heavy water than ordinary water-why...

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  17. Why is heavy water (D(2)O) injurious to human beings, animals and pla...

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  18. Some H(2)SO(4) has been added to distilled water. Explain whether this...

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  19. Explain why lather is not formed when soap is used in hard water.

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  20. It is better to use detergent than soap in hard water - explain why.

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