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The p-Block Ele...

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  • Question 1
    1 / -0

    Which of the following compounds of boron does not exist in the free form?

  • Question 2
    1 / -0

    Composition of borax is 

  • Question 3
    1 / -0

    Column-IColumn-II
    $$A: He$$$$i: $$ High electron affinity
    $$B: Cl$$$$ii:$$ Most electropositive element
    $$C: Ca$$$$iii:$$ Strongest reducing agent
    $$D: Li$$$$iv:$$ Highest ionization energy
    The correct match of contents in Column -I with those in Column -II is:

  • Question 4
    1 / -0

    Which reagent is used to remove $$SO_{4}^{2-}$$ and $$Cl^{-}$$?

  • Question 5
    1 / -0

    In the electrothermal process, the compound displaced by silica from calcium phosphate is:

  • Question 6
    1 / -0

    In laboratory silicon can be prepared by the reaction :

  • Question 7
    1 / -0

    Silica is added to roasted copper ore during smelting in order to remove

  • Question 8
    1 / -0

    Increasing order of stability of the +2 oxidation state of the ions ?

  • Question 9
    1 / -0

    Which of the following compounds does not exist?

  • Question 10
    1 / -0

    Which of the following halides is inert towards hydrolysis at room temperature?

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