Coordination Compounds Class 12 MCQs Questions with Answers

1. (Crystal Field Theory) When the valence d orbitals of the central metal ion are split in energy in an octahedral ligand field, which orbitals are raised least in energy?

2. A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?

3. The oxidation state of Cr in lCr(NH3)4Cl2]+ is:

4. The CFSE for octahedral [CoCl6]4- is 18,000 cm-1. The CFSE for tetrahedral [CoCl4]2- will be:

5. (Crystal Field Theory) Strong field ligands such as CN-:

6. On treatment of 100 mL of 0.1 MCOCl3.6H2O with excess of AgNO3, 1.2 × 1022 ions are precipitated. The complex is:

7. Primary and secondary valency of Pt in [Pt(en)2Cl2] are:

8. What kind of isomerism exists between [Cr(H2O)6]Cl3 and [Cr(H3O)5Cl]Cl2. H2O?

9. Which of these statements about [Co(CN)6]³¯ is true:

10. EDTA is used for the estimation of:

11. Trunbull’s blue is:

12. Some salts containing two different metallic elements give test for only one of them in solution, such salts are:

13. Select the correct IUPAC name for: [FeF4(OH2)2]-

14. A molecule that cannot be superimposed on its mirror image is said to exhibit which of the following?

15. Which one of the following is expected to exihibit optical isomerism (en = ethylene diammine):

16. In Ni (CO)4, the nickel atom is ……… hybridised:

17. EDTA combines with cations to form:

18. The co-ordination number of cobalt in the complex [Co(en)2Br2]Cl2 is:

19. Which of the following shall form an octahedral complex?

20.  An example of a sigma bonded organometallic compound is: