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S-Block Elements Test - 20

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S-Block Elements Test - 20
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Weekly Quiz Competition
  • Question 1
    4 / -1
    On dissolving moderate amount of sodium metal in liquid NH3 at low temperature, which one of the following does not occur?
  • Question 2
    4 / -1
    The order of solubility of lithium halides in nonpolar solvents follows the order:
  • Question 3
    4 / -1
    Melting points of the chlorides of alkali metals decreases in the order:
  • Question 4
    4 / -1
    The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders ?
  • Question 5
    4 / -1
    Which of the following is used as a source of oxygen in space capsules, submarines and breathing masks
  • Question 6
    4 / -1
    The oxide of which of the following metals is most stable to heat?
    Solution

  • Question 7
    4 / -1
    Which of the following is formed when lithium is heated in air?
  • Question 8
    4 / -1
    Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally ?
  • Question 9
    4 / -1
    The solubility of metal halides depends on their nature, lattice enthalpy and hydration enthalpy of the individual ions. Among the fluorides of alkali metals, the lowest solubility of LiF in water is due to...
  • Question 10
    4 / -1
    In the synthesis of sodium carbonate, the recovery of ammonia is done by treating NH4Cl with Ca(OH)2 .The by product obtained in this process is ...
    Solution

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