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S and P Block Elements Test - 10

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S and P Block Elements Test - 10
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  • Question 1
    1 / -0

    Which of the following is insoluble in water –

    Solution

    Fluorine being the most electronegative element, forms the strong bonds with calcium. As the size of the halogen atom increases, its ability to form strong bonds with calcium decreases. Hence, CaF2 is insoluble in water.

  • Question 2
    1 / -0

    Which of the following is / are ionic in character –

    Solution

    Anions that are very small in size form the compounds having ionic character. Thus, AlF3 and SnF4 are ionic in nature.

  • Question 3
    1 / -0

    Select correct statement (s) from the following –

    Solution

    UF6 is more stable than UCl6 due more ionic nature

  • Question 4
    1 / -0

    The most reactive halogen is –

    Solution

    F is most reactive due to least F– F Bond energy highest electronegative and highest reducing power of F atom.

  • Question 5
    1 / -0

    When a fluoride is heated with conc. H2SO4 in a glass tube and if a drop of water is held at the mouth of the glass tube, a white deposit formed is of –

    Solution

    SiO2 + 4HF → SiF4 + 2H2O 
    3SiF4 + 3H2O → H2SiO3 + 2H2SiF6

  • Question 6
    1 / -0

    Which has the highest heat of vaporisation –

    Solution

    HF has highest heat of vaporization due to strongest Hydrogen bonding

  • Question 7
    1 / -0

    Good quality bleaching powder contains available chlorine about –

    Solution

    Commercial samples of Bleaching powder have 35-38% Cl2

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