Tiêu đề UNIT 5 COORDINATION COMPOUNDS-1.pdf ✅

Page| 2 b) Nitrosobenzene c) N-phenyl hydroxylamine d) Hydrazobenzene 10. The IUPAC name of [Co(NH3 )5 ONO] 2+ ion is a) Pentaamminenitrito cobalt (IV) ion b) Pentaammine nitro cobalt (III) ion c) Pentaamminenitrito cobalt (III) ion d) Pentaammine nitro cobalt (IV) ion 11. The compound which does not show paramagnetism is a) NO2 b) NO c) [Ag(NH3 )2 ]Cl d) [Cu(NH3 )4Cl2 ] 12. Which of the following is expected to undergo nitration more easily and readily to furnish the corresponding nitro derivatives employing the usual nitrating mixture? a) C6H6 b) C6H5NO2 c) C6H5CH3 d) C6H5 ∙ CCl3 13. The number of unpaired electrons calculated in [Co(NH3 )6] 3+and [Co(F6 )] 3− are a) 4 and 4 b) 0 and 2 c) 2 and 4 d) 0 and 4 14. The IUPAC name of a) 4-hydroxy amino benzene carboxylic acid b) 4-(N-hydroxy) imino benzene carboxylic acid c) 4-hydroxy imino cyclohexanoic acid d) 4-(N-hydroxy) imino cyclohexane-1 -carboxylic acid 15. The IUPAC name of the coordination compound K2[Zn(OH)4] is a) Potassium tetrahydroxozine (II) b) Dipotassiumtetrahydroxo(II) c) Potassium tetrahydroxozincate (II) d) Potassium tetrahydroxozincate (III) 16. Arrange in order of decreasing trend towards SEreactions, Chlorobenzene, Benzene, Anilium chloride, Toluene: I. (II) (III) (IV) a) II > I > III > IV b) III > I > II > IV c) IV > II < I > III d) I > II > III > IV 17. Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains: a) Mixture of o- and m-bromotoluenes b) Mixture of o- and p-bromotoluenes c) Mixture of o- and p-dibromobenzenes d) Mixture of o- and p-bromoanilines 18. A positive carbylamine test is given by: a) N, N-dimethylaniline b) 2,4-dimethylaniline
Page| 3 c) N-methyl-o-methylaniline d) p-methyl benzylamine 19. CN −is strong field ligand. This is due to the fact that a) It carries negative charge b) It is a pseudohalide c) It can accept electrons from metal species d) It forms high spin complexes with metal species. 20. Which of the following is not true for ligand metal complex? a) Highly charged ligand forms strong bond b) Greater the ionization potential of central metal, the stronger is the bond c) Larger the permanent dipole moment of ligand, the more stable is the bond d) Larger the ligand, the more stable is the metal-ligand bond 21. The nitration of nitrobenzene with fuming HNO3 will give: a) TNB b) 1,3-dinitrobenzene c) Picric acid d) 1,4-dinitrobenzene 22. A ligand can also be regarded as a) Lewis acid b) Bronsted base c) Lewis base d) Bronsted acid 23. The correct statement with respect to the complexes Ni(CO)4 and [Ni (CN)4 ] 2− is a) Nickel is in the same oxidation state in both b) Both have terahedral geometry c) Both have square planar geometry d) Have tetrahedral and square planar geometry respectively 24. Which one of the following has lowest value of paramagnetic behaviour? a) [Cr(CN6 )4 ] 3− b) [Mn(CN)6 ] 3− c) [Fe(CN)6 ] 3− d) [Co(CN)6 ] 3− 25. In the reaction; the products are: a) b) c)
Page| 4 d) 26. An octahedral complex is formed when central metal atom undergoes hybridization amongst the....orbitals. a) sp 3 b) dsp 2 c) sp 3d d) sp 3d 2 27. a) b) c) d) 28. Biological oxidation of C6H6 taking place in body of dog, gives: a) Benzoic acid b) Toluic acid c) Maleic acid d) Muconic acid 29. Ammonia forms the complex ion [Cu(NH3 )4 ] 2+ with copper ions in the alkaline solutions but not in acidic solutions .What is the reason for it? a) In acidic solutions hydration protects copper ions b) In acidic solutions protons coordinate with ammonia molecules forming NH4 + ions and NH3 molecules are not available c) In alkaline solutions insoluble Cu(OH)2is precipitated which is soluble in excess of any alkali d) Copper hydroxide is an amphoteric substance 30. Which of the following has the highest molar conductivity in solution? a) [Pt(NH3 )6 ]Cl4 b) [Pt(NH3 )5Cl]Cl3 c) [Pt(NH3 )4Cl2 ]Cl2 d) [Pt(NH3 )3Cl3]Cl 31. Which of the following is not meta directing group? a) —SO3H b) —NO2 c) —CN d) —NH2 32. Which of the following is an organometallic compound? a) Lithium methoxide b) Lithium acetate c) Lithium dimethylamine d) Methyl lithium 33. Which among the following is very strong o-, p-directing group?