Coordination Compounds

Bihar Board Class 12 · Chemistry · 33 past questions

1. Q1 2026 Set A2024 Set D

   The oxidation state of Ni in Ni (CO)$_4$ is

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2. Q2 2026 Set A

   The number of ions in aqueous solution of [Co(NH$_3$)$_5$Cl]Cl$_2$ is

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3. Q3 2026 Set A

   $[Co(NH_3)_5Br]SO_4$ and $[Co(NH_3)_5SO_4]Br$ are related to each other as

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4. Q4 2026 Set A

   Vitamin $B_{12}$ contains

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5. Q5 2025 Set D

   The oxidation state of Fe in $K_4[Fe(CN)_6]$ is

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6. Q6 2025 Set D

   The effective atomic number (E.A.N.) of cobalt in complex ion $[Co(en)_2Cl_2]^+$ is

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7. Q7 2025 Set D

   The structure of complex ion $[\text{Ni (CN)}_4]^{2-}$ is

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8. Q8 2025 Set D

   The IUPAC name of complex compound $[\text{Co(NH}_3)_6]\text{Cl}_3$ is

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9. Q9 2025 Set D

   Which of the following cannot show linkage isomerism ?

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10. Q10 2024 Set D

    Which of the following has the highest molar electrical conductance in aqueous solution ?

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11. Q11 2024 Set D

    The IUPAC name of $K_3[Fe(CN)_6]$ is

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12. Q12 2024 Set D

    The coordination number of Ni in $[Ni(C_2O_4)_3]^{4-}$ is

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13. Q13 2023 Set F

    Who gave the first important theory of coordination compounds ?

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14. Q14 2023 Set F

    Which of the following is an example of double salt ?

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15. Q15 2023 Set F

    Which of the following is a bidentate ligand ?

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16. Q16 2023 Set F

    The oxydation number of Pt in $[Pt(C_2H_4)Cl_3]^-$ is

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17. Q17 2022 Set E

    All ligands are

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18. Q18 2022 Set E

    Which of the following is paramagnetic ?

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19. Q19 2022 Set E

    The complex ion in which central metal atom has no $d$-electron is

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20. Q20 2022 Set E

    Which statement is incorrect ?

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21. Q21 2021 Set A

    The oxidation number of Cr in the complex $[Cr(H_2O)_4Cl_2]^+$ is

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22. Q22 2021 Set A

    In co-ordination compound $K_4[Ni(CN)_4]$, the oxidation state of nickel is

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23. Q23 2021 Set A

    The correct formula of hexamine platinum (IV) chloride is

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24. Q24 2021 Set A

    The co-ordination number of Cr in $K_3[Cr(C_2O_4)_3]$ is

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25. Q25 2019 Set D

    The oxidation number of Fe in K$_4$[Fe(CN)$_6$] is -

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26. Q26 2019 Set D

    $K_3[Fe(CN)_6]$ is a -

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27. Q27 2018

    The compound having tetrahedral geometry is-

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28. Q28 2018

    IUPAC name of $H_2(PtCl_6)$ is-

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29. Q29 2018

    Which complex has maximum paramagnetic moment value amongst the following-

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30. Q30 2017

    What is the coordination number of Cr in $K_3[Cr(OX)_3]$ ?

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31. Q31 2017

    The EAN of cobalt in the complex ion $[Co(en)_2Cl_2]$ is -

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32. Q32 2016

    Which of the following compounds has tetrahedral geometry?

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33. Q33 2016

    Discuss the following terms

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