Chemistry_Class-12_Ch-5_Coordination Compounds_Topic-1_Basic Terms. 1 / 18 1. A) 4 ions B) 3 ions C) 2 ions D) 5 ions 2 / 18 2. Ligand in a complex salt are A) Anions linked by coordinate bonds to a central metal atom or ion B) Cation linked by coordinated bonds to a central metal atom or ion C) Molecules linked by coordinate bonds to a central metal atom or ion D) Ions or molecules linked by coordinate bonds to a central metal atom or ion 3 / 18 3. According to Lewis theory the ligands are A) Acidic in nature B) Basic in nature C) Neither acidic nor basic D) Some are acidic and others are basic 4 / 18 4. Which of the following is the odd one out A) Potassium ferrocyanide B) Ferrous ammonium sulphate C) Potassium ferricyanide D) Tetrammine copper (II) sulphate 5 / 18 5. The number of ions given by the complex compound [Co(NH3)4Cl2] Cl is A) 2 B) 3 C) 4 D) 5 6 / 18 6. In complex compounds, metal ligand bond is A) Coordinate bond B) Hydrogen bond C) Ionic bond D) Covalent bond 7 / 18 7. Which of the following ligand possess only one coordination site A) B) C) D) 8 / 18 8. How many EDTA (enthylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a Ca2+ ion A) Six B) Three C) One D) Two 9 / 18 9. The coordination number of a central metal atom in a complex is determined by A) The number of ligands around a metal ion bonded by sigma and pi-bond both B) The number around a metal ion bonded by pi-bonds C) The number of ligands around a metal ion bonded by sigma bonds D) The number of only anionic ligands bonded to the metal ion 10 / 18 10. Among the properties (i) reducing (ii) oxidising (iii) complexing, the set of properties shown by CN- ion towards metal species is A) iii, i B) ii, iii C) i, ii D) i, ii, iii 11 / 18 11. Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in alkaline solutions but not in acidic solution. What is the reason for it A) In acidic solutions hydration protects copper ions B) In acidic solutions protons coordinate with ammonia molecules forming NH+4 ions and NH3 molecules are not available C)In alkaline solution insoluble Cu(OH)2 is precipitated which is soluble in excess of any alkali D) Copper hydroxide is an amphoteric substance 12 / 18 12. The ligand N(CH2CH2NH2)3 is A) Tridentate B) Pentadentate C) Tetradentate D) Bidentate E) Hexadentate 13 / 18 13. Which of the following is a negatively charged bidentate ligand A) Dimethyl glyoximato B) Cyano C) Ethylene diamine D) Acetato 14 / 18 14. Which of the following is a π – acid ligand A) NH3 B) CO C) F- D) Ethylene diamine 15 / 18 15. 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 A) Thiosulphato B) Oxalato C) Glycinato D) Ethane -1, 2-diamine 16 / 18 16. The anion of acetylacetone (acac) forms Co(acac)3 chelate with Co3+. The rings of the chelate are A) Five membered B) Four membered C) Six membered D) Three membered 17 / 18 17. Among the following, the π – acid ligand is A) F B) NH3 C) CN- D) I- 18 / 18 18. The coordination number of Co and Al in [Co(Cl)(en)2]Cl and K3[Al(C2O4)3], respectively, are (en = ethane-1, 2-diamine) A) 3 and 3 B) 5 and 6 C) 6 and 6 D) 5 and 3 Your score isThe average score is 0% 0% Exit
