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P - Block Eleme...

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  • Question 1
    4 / -1

    Which one of the following can be used in place of NH4Cl for the identification of the third group radicals ?

  • Question 2
    4 / -1

    Which of the following is/are amphoteric

  • Question 3
    4 / -1

    If the supply of oxygen is limited, H2S reacts with oxygen to form

  • Question 4
    4 / -1

    The oxide which cannot act as reducing agent is

  • Question 5
    4 / -1

    Zinc reacts with very dil. HNO3 to give zinc nitrate and

  • Question 6
    4 / -1

    The correct order of the O—O bond length in O2, H2O2 and O3 is

  • Question 7
    4 / -1

    The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence:

  • Question 8
    4 / -1

    In diborane

  • Question 9
    4 / -1

    NH3 and H2O form NH4OH by

  • Question 10
    4 / -1

    In graphite, electrons are

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