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D and F Block Elements Test - 34

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D and F Block Elements Test - 34
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    Nitriding is the process of surface hardening steel by treating it in an atmosphere of
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    Which one of the following ions will have maximum number of unpaired electrons ?
    (At. No. Fe = 26 , Co= 27)
  • Question 3
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    The oxidation state of Cr in K2Cr2O7 is
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    A blue colouration is not obtained when
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  • Question 5
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    The correct ground state electronic configuration of chromium atom (Z = 24) is
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    The electronic configuration of four elements are given below. Which element does not belong to the same family as others?
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    The aqueous solution of the following salts will be coloured in the case of
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    Which of the following compounds is formed when a mixture of K2Cr2O7 and NaCl is heated with conc. H2SO4?
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    Sodium thiosulphate is used in photography because of its
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