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What happens when phosphoric acid is hea...

What happens when phosphoric acid is heated ?

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MODERN PUBLICATION-HYDROGEN-REVISION EXERCISES (Very Short Answer Questions)
  1. Name two metals which can displace hydrogen from acids.

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  2. Which isotope of hydrogen is radioactive in nature?

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  3. a. What does [H(9)O(4)]^(o+) stand for ? Draw its structures. b. Can...

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  4. What is meant by autoprotolysis of water ?

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  5. Which of the following is the most reactive towards ring nitration ?

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  6. How does O(3) react with lead sulphide ? Write chemical equation.

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  7. Bleaching action of H(2)O(2) is due to its :

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  8. What happens when phosphoric acid is heated ?

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  9. Give an example of (i) ionic hydride, (ii) covalent hydride.

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  10. Calcium carbide reacts with water to produce

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  11. Complete the following reactions: (i) XeF2 + H2 to , (ii) XeF6 + Si...

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  12. Complete the following reactions: (i) XeF2 + H2 to , (ii) XeF6 + Si...

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  13. Complete the following reactions: (i) CaO(s)+H(2)O(l)to Na(2)O(s)...

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  14. Why do lakes freeze from water top towards bottom?

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  15. Explain why water has high boling and melting points are compared to H...

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  16. Write chemical reactions to show the amphoteric nature of water.

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  17. What is meant by dispersion of light ?

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  18. How is temporary hardness in water removed?

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  19. Which of the following ions will cause hardness in water sample?

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  20. Which of the following ions will cause hardness in water sample?

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