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P - Block Eleme...

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  • Question 1
    4 / -1

    In the manufacture of sulphuric acid by contact process, Tyndall box is used to

  • Question 2
    4 / -1

    Among the following oxoacids, the correct decreasing order of acid strength is

  • Question 3
    4 / -1

    The high oxidising power of fluorine in due to its

  • Question 4
    4 / -1

  • Question 5
    4 / -1

    The hydrides of the first elements in groups 15-17, namely NH3 , H2O and HF respectively shows abnormally high values for melting and boiling points. This is due to

  • Question 6
    4 / -1

    P and Q respectively, are the sodium salts of

  • Question 7
    4 / -1

    R, S and T, respectively, are

  • Question 8
    4 / -1

    Bleaching powder loses its power on keeping for a long time because

  • Question 9
    4 / -1

    The relative basic character of the following is

  • Question 10
    4 / -1

    Which of the following compounds gives chlorine dioxide when it reacts with SO2 in the presence of acid ?

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