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D and F Block E...

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  • Question 1
    4 / -1

    Nitriding is the process of surface hardening steel by treating it in an atmosphere of

  • Question 2
    4 / -1

    Which one of the following ions will have maximum number of unpaired electrons ?
    (At. No. Fe = 26 , Co= 27)

  • Question 3
    4 / -1

    The oxidation state of Cr in K2Cr2O7 is

  • Question 4
    4 / -1

    A blue colouration is not obtained when

  • Question 5
    4 / -1

    The correct ground state electronic configuration of chromium atom (Z = 24) is

  • Question 6
    4 / -1

    The electronic configuration of four elements are given below. Which element does not belong to the same family as others?

  • Question 7
    4 / -1

    The aqueous solution of the following salts will be coloured in the case of

  • Question 8
    4 / -1

    Which of the following compounds is formed when a mixture of K2Cr2O7 and NaCl is heated with conc. H2SO4?

  • Question 9
    4 / -1

  • Question 10
    4 / -1

    Sodium thiosulphate is used in photography because of its

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