Coordination Compounds: JEE Main Chemistry Previous Year Questions

596 previous year questions from Coordination Compounds. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. 1.Select the option with correct property -
2. 2.Which of the following name formula combinations is not correct ? Formula Name
3. 3.Identify the formula of bis (ethylenediamine) dithiocyanatoplatinum(IV).
4. 4.${\text{CrCl}}_3\cdot {\text{xNH}}_3$ can exist as a complex. 0.1 molal aqueous solution of this complex shows a depression in freezing point of ${0.558}^{\circ }C$…
5. 5.Consider the coordination compound, [Co$(N{H}_3{)}_6$]$C{l}_3$. In the formation of the complex, the species which acts as the Lewis acid is
6. 6.Reaction of [Co($H_2$O)${}_6$]${}^{2+}$ with excess ammonia and in the presence of oxygen results into a diamagnetic product. Number of electrons present in $t_{2g}$-…
7. 7.A complex compound in which the oxidation number of a metal is zero
8. 8.The magnetic moment of an octahedral homoleptic $\text{Mn}\text{(}\text{II}\text{)}$ complex is $5.9\text{BM}$. The suitable ligand for this complex is:
9. 9.Which of the following statement is false ?
10. 10.The total number of unpaired electrons present in the complex $K_3\left(\text{Cr}\text{(}\text{oxalate}{\text{)}}_3\right)$ is____.
11. 11.The species that has a spin-only magnetic moment of$5.9\text{BM}$ , is $T_d=$ tetrahedral)
12. 12.Which one of the following complexes is violet in colour?
13. 13.Nickel (Z = 28) combines with a uninegative monodenate ligand to form a diamagnetic complex $[Ni{L}_4{]}^{2–}$. The hybridisation involved and the number of unpaired electr…
14. 14.In which one of the pairs of ion given, there is an ion that forms a coordination compound with both aqueous sodium hydroxide and ammonia and an other ion that forms a co…
15. 15.Homoleptic octahedral complexes of a metal ion $M^{3+}$ with three monodentate ligands $L_1\text{,}{L}_2$ and $L_3$ absorb wavelengths in the region of gre…
16. 16.Which one of the following complexes will consume more equivalents of aqueous solution of Ag($N{O}_3$) ?
17. 17.Which one of the following complexes is not expected to exhibit isomerism?
18. 18.Dichromate ion is treated with base, the oxidation number of Cr in the product formed is:
19. 19.How many ions per molecule are produced in the solution when Mohr salt is dissolved in excess of water?
20. 20.Consider the transition metal ions ${\text{Mn}}^{3+}\text{,}{\text{Cr}}^{3+}\text{,}{\text{Fe}}^{3+}$ and ${\text{Co}}^{3+}$ and all form low spin octahedral complexes.…
21. 21.Three complexes,[CoCl($N{H}_3$)${}_5$]${}^{2+}$ (I), [Co($N{H}_3$)${}_5$ $H_2$O]${}^{3+}$(II) and [Co($N{H}_3$)${}_6$]${}^{3+}$ (III) absorb light in the visible…
22. 22.Which of the following complexes has lowest molar conductance?
23. 23.Two complexes $[Cr(H_{2}O{)}_6]C{l}_3$ (a) and $[Cr(N{H}_3{)}_6]C{l}_3$ (b) are violet and yellow coloured respectively. The incorrect statement regarding them is :
24. 24.One mole of the octahedral complex compound $\text{Co}{\left({\text{NH}}_3\right)}_5{\text{Cl}}_3$ gives 3 moles of ions on dissolution in water. One mole of the s…
25. 25.The IUPAC name of the complex [Pt$(N{H}_3{)}_2$Cl($N{H}_{2}C{H}_3$)]Cl is :