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Elements with atomic numbers 17 and 20 f...

Elements with atomic numbers 17 and 20 form compounds with hydrogen. Write the formula of these two compounds and compare their chemical behaviour in water.

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`HCI, CaH_(2)`
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ICSE-HYDROGEN-SHORT ANSWER TYPE QUESTIONS
  1. Write two reactions to explain amphoteric nature of water .

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  2. What is meant by hydrogen economy?

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  3. Explain the correct context in which the following terms are used: ...

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  4. Explain the correct context in which the following terms are used: d...

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  5. Explain the correct context in which the following terms are used: p...

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  6. Explain the correct context in which the following terms are used: h...

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  7. Is it correct to say that hydrogen can behave as a metal? If it is cor...

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  8. Write a short note on the isotopes of hydrogen.

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  9. Does hydrogen show allotropy? How many allotropes of dihydrogen are kn...

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  10. Name the class of hydrides to which H(2)O, B(2)H(6), NaH and LaH(3) be...

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  11. Hydrogen forms three types of bonds in its compounds. Giving suitable ...

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  12. Elements with atomic numbers 17 and 20 form compounds with hydrogen. W...

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  13. What is the difference between the terms ‘hydrolysis’ and ‘hydration’ ...

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  14. What is meant by hydrogenation?

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  15. What are tHe advantages in using hydrogen as a fuel ?

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  16. Why are ionic hydrides frequently used to remove traces of water from ...

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  17. Although D(2)O resembles H(2)O chemically, yet it is a toxic substance...

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  18. Why is ice less dense than water and what kind of attractive forces mu...

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  19. Describe some unusual properties of water.

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  20. Why do lakes freeze from top towards bottom ?

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