12th C+G Mini Test 5.1+5.2.docx

+-----------------------+-----------------------+-----------------------+ | | **[12^th^ Mini Test | | | | 5.1 & | | | | 5.2] Max. | | |...

+-----------------------+-----------------------+-----------------------+ | | **[12^th^ Mini Test | | | | 5.1 & | | | | 5.2] Max. | | | | Marks: 15** | | | | | | | | **Time: 15 minutes** | | +=======================+=======================+=======================+ | 1. | What is the secondary | **1** | | | valence in | | | | \[Co(NH₃)₆\]Cl₃? | | | | | | | | a\) 3 b) 6 c) 9 d) | | | | 12 | | +-----------------------+-----------------------+-----------------------+ | 2. | What is the oxidation | **1** | | | number of iron in | | | | \[Fe(CN)₆\]³⁻? | | | | | | | | a\) +2 b) +3 c) -3 | | | | d) -6 | | +-----------------------+-----------------------+-----------------------+ | 3. | What is the | **1** | | | coordination number | | | | of cobalt in | | | | \[Co(en)₃\]³⁺? | | | | | | | | a\) 3 b) 6 c) 8 d) 9 | | +-----------------------+-----------------------+-----------------------+ | 4. | In the complex ion | **1** | | | \[Ni(CO)₄\], CO acts | | | | as a: | | | | | | | | a\) Monodentate | | | | ligand b) Didentate | | | | ligand | | | | | | | | c\) Polydentate | | | | ligand d) | | | | Ambidentate ligand | | +-----------------------+-----------------------+-----------------------+ | 5. | Which of the | **1** | | | following ligands is | | | | hexadentate? | | | | | | | | a\) EDTA b) en c) | | | | ox²⁻ d) NH₃ | | +-----------------------+-----------------------+-----------------------+ | 6. | What is the primary | **1** | | | valence in the | | | | complex | | | | \[Co(NH₃)₆\]Cl₃? | | | | | | | | a\) 0 b) 1 c) 3 d) 6 | | +-----------------------+-----------------------+-----------------------+ | 7. | Which of the | **1** | | | following ions can be | | | | an ambidentate | | | | ligand? | | | | | | | | a\) Cl⁻ b) NO₂⁻ c) | | | | NH₃ d) H₂O | | +-----------------------+-----------------------+-----------------------+ | 8. | Which of the | **1** | | | following dissociates | | | | completely into | | | | simple ions in water? | | | | | | | | a\) K₄\[Fe(CN)₆\] b) | | | | \[Co(NH₃)₆\]Cl₃ c) | | | | Mohr's salt d) | | | | \[Ni(CO)₄\] | | +-----------------------+-----------------------+-----------------------+ | 9. | Which of the | **1** | | | following is the | | | | correct formula for | | | | Ammineaquadibromidoco | | | | pper(II)? | | | | | | | | a) | | | | \[Cu(NH₃)₂(H₂O)₂Br₂\] | | | | b) | | | | \[Cu(NH₃)(H₂O)Br₂\] | | | | | | | | c) | | | | \[Cu(NH₃)₂(H₂O)Br₂\] | | | | d) | | | | \[Cu(NH₃)₂(H₂O)Br\] | | +-----------------------+-----------------------+-----------------------+ | 10. | What is the IUPAC | **1** | | | name of the complex | | | | K₃\[Fe(CN)₆\]? | | | | | | | | a\) Potassium | | | | hexacyanidoferrate(II | | | | I) | | | | | | | | b\) Potassium | | | | hexacyanoferrate(II) | | | | | | | | c\) Potassium | | | | ferricyanide | | | | | | | | d\) Potassium | | | | hexacyanidoferrate(II | | | | ) | | +-----------------------+-----------------------+-----------------------+ | 11. | The compound | **1** | | | \[Co(NH₃)₆\]Cl₃ is | | | | named | | | | \_\_\_\_\_\_\_\_. | | +-----------------------+-----------------------+-----------------------+ | 12. | The ligand CO is | **1** | | | called | | | | \_\_\_\_\_\_\_\_ in | | | | coordination | | | | chemistry. | | +-----------------------+-----------------------+-----------------------+ | 13. | The IUPAC name for | **1** | | | the complex | | | | \[PtCl₂(NH₃)₂\] is | | | | \_\_\_\_\_\_\_\_. | | +-----------------------+-----------------------+-----------------------+ | 14. | A ligand that can | **1** | | | donate four pairs of | | | | electrons to a metal | | | | ion is called | | | | \_\_\_\_. | | +-----------------------+-----------------------+-----------------------+ | 15. | In the complex | **1** | | | \[Ni(CO)₄\], the | | | | oxidation number of | | | | Ni is \_\_\_\_. | | +-----------------------+-----------------------+-----------------------+