complexes multiple choice questions
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complex numbers topic question paper for high school studentsTRANSCRIPT
GYAN BHARATI SCHOOLASSIGNMENT- MULTIPLE CHOICE QUESTIONS
COORDINATION COMPLEXES:
1. The correct name of the complex [Cr(NH3)6]Cl3 is:a. Hexaamminechromium (III) chloride. b. Hexaamminechromium (II) chloride.c. Hexammoniachromium (III) chloride. d. Chromium(III) hexaaminechloride.
2. Which would exhibit coordination isomerism?a. [Cr(NH3)6][Co(CN)6] b. [CoCl2(en)2]+c. [Cr(NH3)6]Cl3. d. [CrCl2(en)2]+.
3. Which reagent can be used to identify the nickel ions?A. Resorcinol. B. Dimethylglyoximme.C. Diphenylbenzidine. D. Potassium ferrocyanide.
4. Among Ni(CO)4,( X), [Ni(CN)6]2- (Y) and [NiCl4]2- (Z):a. X and Z are diamagnetic but Y is paramagnetic.b. Y and Z are diamagnetic and X is paramagnetic.c. X and Y are diamagnetic and Z is paramagnetic.d. X is paramagnetic but Y and Z are diamagnetic.
5. The compound that does not show paramagnetism is :a. [Cu(NH3)4]Cl2. b. [Ag(NH3)2]Cl. c. NO. d. NO2.
6. Among the following which has highest magnetic moment(spin only formula)a. [Cr(H2O)6]3+ b. [Fe(H2O)6]2+
c. [Cu(H2O)6]2+ d. [Zn(H2O)6]2+.
7. Which of the following is a - acid ligand?a. NH3 b. CO c. F- d. Ethylenediamine.
8. Which of the [NiCl4]2-, [Ni(CN)6]2- , Ni(CO)4 and [Fe(CN)6]3- has square planar structure?a. [NiCl4]2- b. [Ni(CN)6]2-
c. Ni(CO)4 d. [Fe(CN)6]3-
9. In the compound lithiumtetrahydridoaluminate, the ligand is a. H+ b. H c. H- d. Al.
10. A coordination compound of cobalt has the molecular formula containing five ammonia molecules, one nitro group and two chlorine atoms for a cobalt atom. One mole of this compound produces three moles of ions in solution. On reacting with excess of aqueous solution of silver nitrate two moles of AgCl are produced. The formula of the complex would be:
a. [Co(NH3)4(NO2)Cl][NH4Cl]b. [Co(NH3)Cl][ClNO2]c. [Co(NH3)5(NO2)]Cl2.d. [Co(NH3)5](NO2)2Cl]
11. The correct IUPAC name of the complex[Ni(NH3)4][NiCl4] is:a. Tetrachloridonickel(II) tetraamminenickelate(II).b. Tetraamminenickel(II) tetrachloridinickelate(II)c. Tetraamminenickel(II) tetrachloronickelate(II).d. Tetrachloridonickel(II) tetraamminenickelate(II).
12. Both [Ni(CO)4] and [Ni(CN)4]2- are diamagnetic. The hybridization of nickel in these complexes respectively are:a. sp3, and sp3.b. sp3 and dsp2.c. dsp2 and sp3.d. dsp2 and dsp2.