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Explain the significance of sodium, pota...

Explain the significance of sodium, potassium, magnesium and calcium in biological fluids.

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ICSE-THE s - BLOCK ELEMENTS-NCERT TEXT-BOOK. EXERCISES (WITH HINTS AND SOLUTIONS)
  1. Why are lithium salts commonly hydrated and those of the other alkali ...

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  2. Why is LiF almost insoluble in water whereas LiCl soluble not only in ...

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  3. Explain the significance of sodium, potassium, magnesium and calcium i...

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  4. What happens when (i) sodium metal is dropped in water? (ii) sodiu...

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  5. What happens when (i) sodium metal is dropped in water? (ii) sodiu...

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  6. What happens when (i) sodium metal is dropped in water? (ii) sodiu...

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  7. The mobilities of the alkali metal ions in aqueous solution are Li^(+)...

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  8. Comment on each of the following observations: (a) The mobilities of...

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  9. Comment on each of the following observations: (a) The mobilities of...

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  10. State as to why (a) a solution of Na(2)CO(3) is alkaline ? (b) alk...

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  11. State as to why (a) a solution of Na(2)CO(3) is alkaline ? (b) alk...

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  12. State as to why (a) a solution of Na(2)CO(3) is alkaline ? (b) alk...

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  13. Write balanced equations for reactions between (a) Na(2)O(2) and wa...

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  14. Write balanced equations for reactions between (a) Na(2)O(2) and wa...

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  15. Write balanced equations for reactions between (a) Na(2)O(2) and wa...

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  16. How would you explain the following observations ? (i) BeO is almost...

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  17. How would you explain the following observations ? (i) BeO is almost...

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  18. How would you explain the following observations ? (i) BeO is almost...

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  19. Which of the alkali metal is having least melting point ?

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  20. Which one of the following alkali metals gives hydrated salts?

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