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Sodium fire in the laboratory should not...

Sodium fire in the laboratory should not be extinguished by using water. Why ?

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Sodium reacts violently with water producing hydrogen which also catches fire. Therefore, the fire increases on adding water instead of getting extinguished. Hence, water should not be used for extinguishing sodium fire. It can be extinguished by pyrene `(CCI_4).`
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MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -HIGHER ORDER THINKING SKILLS
  1. Name an element which is invariably bivalent and whose oxide is solubl...

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  2. BeCl2 gives an acidic solution when dissolved in water. Why?

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  3. Alkali metal ions are colourless as well as diamagnetic. Explain

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  4. Lil3 is less stable than CsI3. Why?

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  5. Describe the difference in structure between CaH2 and BeH2

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  6. Why it LiF almost insoluble in water while LiCl is soluble not only in...

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  7. The alkali metal having low melting point is

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  8. LiH, LiF and Li(3)N show exceptional thermal stabilites. Comment.

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  9. The combustion of Li, Na, K in excess of air gives major oxides

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  10. Which alkali metal carbonate is thermally unstable and why?

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  11. Which out of the following and why can be used to store an alkali meta...

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  12. Mg^(2+) ion more highly hydrated than Na^(+) ion.

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  13. Explain the following: (a) Be(OH)2 dissolves in sodium hydroxide bu...

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  14. MgN(2) when reacted with water gives NH(3) and HCl. However, MgCl(2) d...

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  15. LiH is more stable than NaH. Explain.

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  16. Sodium fire in the laboratory should not be extinguished by using wate...

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  17. In the reaction of sodium hydride and water:

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  18. The crystalline salts of alkaline earth metals contain more water of c...

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