Coordination Compounds

Bihar Board Class 12 · Chemistry · 33 past questions

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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. Q8 2025 Set D

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

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7. Q11 2024 Set D

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

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8. Q12 2024 Set D

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

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9. Q13 2023 Set F

   Who gave the first important theory of coordination compounds ?

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10. Q14 2023 Set F

    Which of the following is an example of double salt ?

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11. Q15 2023 Set F

    Which of the following is a bidentate ligand ?

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12. Q17 2022 Set E

    All ligands are

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13. Q21 2021 Set A

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

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14. Q22 2021 Set A

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

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15. Q23 2021 Set A

    The correct formula of hexamine platinum (IV) chloride is

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16. Q24 2021 Set A

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

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17. Q25 2019 Set D

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

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18. Q26 2019 Set D

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

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19. Q27 2018

    The compound having tetrahedral geometry is-

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20. Q28 2018

    IUPAC name of $H_2(PtCl_6)$ is-

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21. Q30 2017

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

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22. Q32 2016

    Which of the following compounds has tetrahedral geometry?

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23. Q33 2016

    Discuss the following terms

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