Coordination Compounds PYQs Set 6 (PDF)

Set 6 of 18 · Questions 151-180 of 522

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Mere Teacher · Previous Year Questions NEET Chemistry · Coordination Compounds · Set 6 (Q151-180)
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151. $Which one of the following complexes will most likely absorb visible light ? (At nos. Sc = 21, Ti = 22, V = 23, Zn = 30)$ (1) $[Sc(H_{2} O)_{6}]^{3 +}$ (2) $[Ti(N H_{3})_{6}]^{4 +}$ (3) $[V(N H_{3})_{6}]^{3 +}$ (4) $[Zn(N H_{3})_{6}]^{2 +}$ 152. $The correct order for wavelengths of light absorbed in the complexions (CoCl (NH_{3})_{5})^{2 +}, (Co (NH_{3})_{6})^{3 +} and (Co (CN)_{0})^{3 -} is$ (1) $(CoCl (NH_{3})_{5})^{2 +} > ((Co (NH_{3})_{6})^{3 +} >) (Co (CN)_{6})^{3 -}$ (2) $(Co (NH_{3})_{6})^{3 +} > (Co (CN)_{6})^{3 -} > (CoCl (NH_{3})_{5})^{2 +}$ (3) $(Co (CN)_{6})^{3 -} > (CoCl (NH_{3})_{5})^{2 +} > (Co (NH_{3})_{6})^{3 +}$ (4) $(Co (NH_{3})_{6})^{3 +} > (CoCl (NH_{3})_{5})^{2 +} > (Co (CN)_{6})^{3 -}$ 153. $In which of the following coordination compounds, the central metal ion is in zero oxidation state?$ (1) $(Fe (H_{2} O)_{6}) Cl_{3}$ (2) $K_{4} (Fe (CN)_{6})$ (3) $Fe (CO)_{5}$ (4) $(Fe (H_{2} O)_{6}) Cl_{2}$ 154. $The incorrect statement among the following is :$ (1) $VOSO_{4} is a reducing agent$ (2) $Red colour of ruby is due to the presence of CO^{3 +}$ (3) $Cr_{2} O_{3} is an amphoteric oxide$ (4) $RuO_{4} is an oxidizing agent$ 155. $Among [Ni (C O)_{4}], [N i C l_{4}]^{2-}, [Co(N H_{3})_{4} C l_{2}]Cl, N a_{3} [C o F_{6}], N a_{2} O_{2} and C s O_{2}, the total number of paramagnetic compounds is :$ (1) $2$ (2) $3$ (3) $4$ (4) $5$ 156. $The correct order of spin-only magnetic moments among the following is : (Atomic number : Mn = 25, Co = 27, Ni = 28, Zn = 30)$ (1) $[Z n C l_{4}]^{2-} > [N i C l_{4}]^{2-} > [C o C l_{4}]^{2-} > [M n C l_{4}]^{2-}$ (2) $[C o C l_{4}]^{2-} > [M n C l_{4}]^{2-} > [N i C l_{4}]^{2-} > [Z n C l_{4}]^{2-}$ (3) $[N i C l_{4}]^{2-} > [C o C l_{4}]^{2-} > [M n C l_{4}]^{2-} > [Z n C l_{4}]^{2-}$ (4) $[M n C l_{4}]^{2-} > [C o C l_{4}]^{2-} > [N i C l_{4}]^{2-} > [Z n C l_{4}]^{2-}$ 157. $Which of the following system in an octahedral complex has maximum unpaired electrons?$ (1) $d^{9} (high spin)$ (2) $d^{6} (low spin)$ (3) $d^{4} (low spin)$ (4) $d^{7} (high spin)$ 158. $Match the metals (column I) with the coordination compound(s)/enzyme(s) (column II): Column I (Metals): (A) Co (B) Zn (C) Rh (D) Mg Column II (Coordination compound(s)/enzyme(s)): i. Wilkinson catalyst ii. Chlorophyll iii. Vitamin B_{12} iv. Carbonic anhydrase$ (1) $(A) - (iii); (B) - (iv); (C) - (i); (D) - (ii)$ (2) $(A) - (i); (B) - (ii); (C) - (iii); (D) - (iv)$ (3) $(A) - (ii); (B) - (i); (C) - (iv); (D) - (iii)$ (4) $(A) - (iv); (B) - (iii); (C) - (i); (D) - (ii)$ 159. $IUPAC name of (Pt (NH_{3})_{2} Cl (NH_{2} CH_{3})) Cl is$ (1) $(Amino methane) chloro (diammine) platinum (II) chloride.$ (2) $Chlorodiammine (methanamine) platinum (II) chloride.$ (3) $Diamminechloro (methanamine) platinum (II) chloride.$ (4) $Diamminechloro (methylamine) platinum (IV) chloride.$ 160. $The complex, [Pt(Py)(NH3)BrCl] will have how many geometrical isomers ?$ (1) $3$ (2) $4$ (3) $0$ (4) $2$ 161. $The complex ion having minimum magnitude of Δ_{o} (CFSE) is$ (1) $(Co (NH_{3})_{6})^{3 +}$ (2) $(Cr (CN)_{6})^{3 -}$ (3) $(Cr (H_{2} O)_{6})^{3 +}$ (4) $(CoCl_{6})^{3 -}$ 162. $Which of the following coordination entities should be expected to absorb light of lowest frequency$ (1) $[Cr(en)3]3+$ (2) $[CrCl6]3-$ (3) $[Cr(NH3)6]3+$ (4) $[Cr(CN)6]3-$ 163. $Identify anionic sphere complex from following.$ (1) $Hexaamminecobalt(III) chloride$ (2) $Potassium hexacyanoferrate(II)$ (3) $Tetraamminedichlorocobalt(III) ion$ (4) $Pentaamminechlorocobalt(III) sulphate$ 164. $The correct order of decreasing field strength of the below given ligands is NCS^{-} S^{2 -} en SCN^{-} I II III IV$ (1) $I > II > IV > III$ (2) $III > II > IV > I$ (3) $III > I > IV > II$ (4) $III > IV > I > II$ 165. $The pair in which both the species have the same magnetic moment (spin only) is$ (1) $[Cr (H_{2} O)_{6}]^{2 +} and [CoCl_{4}]^{2 -}$ (2) $[Co (OH)_{4}]^{2 -} and [Fe (NH_{3})_{6}]^{2 +}$ (3) $[Mn (H_{2} O)_{6}]^{2 +} and [Cr (H_{2} O)]^{2 +}$ (4) $[Cr (H_{2} O)_{6}]^{2 +} and [Fe (H_{2} O)_{6}]^{2 +}$ 166. $Among the following, the species having square planar geometry for central atom are : i. [XeF4] ii. SF4 iii. [NiCl4]2- iv. [PtCl4]2-$ (1) $i and iv$ (2) $i and ii$ (3) $ii and iii$ (4) $iii and iv$ 167. $The IUPAC name of K_{3} [Co (C_{2} O_{4})_{3}] is:$ (1) $Potassium tris(oxalato)cobaltate(III)$ (2) $Potassium tns(oxalato)cobalt(IIl)$ (3) $Potassium trioxalatocobalt(III)$ (4) $Potassium trioxalatocobaltate(III)$ 168. $The compound used in the treatment of lead poisoning is :$ (1) $D -penicillamine$ (2) $desferrioxime B$ (3) $Cis-platin$ (4) $EDTA$ 169. $Match List I with List II LIST-I Complex (A) Mg(N H_{4}) P O_{4} (B) K_{3} [Co(N O_{2})_{6}] (C) MnO(OH)_{2} (D) F e_{4} [Fe(CN)_{6}]_{3} LIST-II Colour (I) brown (II) white (III) yellow (IV) blue Choose the correct answer from the options given below:$ (1) $A-III, B-IV, C-II, D-I$ (2) $A-II, B-III, C-I, D-IV$ (3) $A-II, B-IV, C-I, D-III$ (4) $A-II, B-III, C-IV, D-I$ 170. $Which among the following will be named as dibromidobis (ethylene diamine) chromium (III) bromide?$ (1) $[Cr (e n)_{3}] B r_{3}$ (2) $[Cr(en)_{2} B r_{2}]Br$ (3) $[C r (e n) B r_{4}]^{-}$ (4) $[Cr(en) B r_{2}]Br$ 171. $The correct of order the stoichiometries of AgCl formed when A g N O_{3} in excess is treated with the complexes C o C l_{3} . 6 N H_{3}, C o C l_{3} . 5 N H_{3}, C o C l_{3} . 4 N H_{3} respectively is :$ (1) $1 AgCl, 3AgCl, 2AgCl$ (2) $3AgCl, 1 AgCl, 2AgCl$ (3) $3AgCl, 2AgCl, 1 AgCl$ (4) $2 AgCl, 3 AgCl, 1 AgCl$ 172. $The crystal field stabilization energy (CFSE) for [C o C l_{6}]^{4-} is 18000 c m^{-1}, the CFSE for [C o C l_{4}]^{2-} will be$ (1) $6000 c m^{-1}$ (2) $16000 c m^{-1}$ (3) $18000 c m^{-1}$ (4) $8000 c m^{-1}$ 173. $Which of the following complex exhibit facial meridional geometrical isomerism.$ (1) $Pt (N H_{3}) C l_{3}]^{-}$ (2) $[PtCl_{2} (N H_{3})_{2}]$ (3) $[Ni (CO)_{4}]$ (4) $[Co (NO_{2})_{3} (NH_{3})_{3}]$ 174. $Which of these statements about [Co(CN)6]3- is true ?$ (1) $[Co(CN)6]3- has four unpaired electrons and will be in a low-spin configuration.$ (2) $[Co(CN)6]3- has four unpaired electrons and will be in a high-spin configuration.$ (3) $[Co(CN)6]3- has no unpaired electrons and will be in a high-spin configuration.$ (4) $[Co(CN6)]3- has no unpaired electrons and will be in a low-spin configuration.$ 175. $The correct order of the complexes (Co (NH_{3})_{5} (H_{2} O))^{3 +} (A), (Co (NH_{3})_{6})^{3 +} (B), (Co (CN)_{6})^{3 -} (C) and (CoCl (NH_{3})_{5})^{2 +} (D) in terms of wavelength of light absorbed is$ (1) $D > C > B > A$ (2) $C > B > A > D$ (3) $D > A > B > C$ (4) $C > B > D > A$ 176. $In which of the following pairs, the outer most electronic configuration will be the same?$ (1) $Fe^{2 +} and Co^{+}$ (2) $Cr^{+} and Mn^{2 +}$ (3) $Ni^{2 +} and Cu^{+}$ (4) $V^{2 +} andCr+$ 177. $F e^{3 +} cation gives a prassian blue precipitate on addition of potassium ferrocyanide solution due to the formation of:$ (1) $[Fe(H_{2} O)_{6}]_{2} [Fe(CN)_{6}]$ (2) $F e_{2} [Fe(CN)_{6}]_{2}$ (3) $F e_{3} [Fe(OH)_{2} (CN)_{4}]_{2}$ (4) $F e_{4} [Fe(CN)_{6}]_{3}$ 178. $In ruby and emerald, the metal ion(s) present is/are$ (1) $Cr^{6 +}, Mn^{3 +}$ (2) $Cr^{3 +}$ (3) $Mn^{3 +}, Co^{3 +}$ (4) $Co^{3 +}$ 179. $Gadolinium (atomic number = 64) is a member of 4 f series. It's electronic configuration in +3 oxidation state is [Xe] 4 f^{7} . What is the ground state electronic configuration of gadolinium?$ (1) $[Xe] 4 f^{10}$ (2) $[Xe] 4 f^{8} 6 s^{2}$ (3) $[Xe] 4 f^{7} 5 d^{3}$ (4) $[Xe] 4 f^{7} 5 d^{1} 6 s^{2}$ 180. $Identify a formula of coordinate complex Bis(ethylenediamine)dithiocyanatoplatinum(IV).$ (1) $(Pt (en)_{2} (SCN)_{2})^{2 +}$ (2) $(Pt (en)_{2} (NCS)_{2})^{4 +}$ (3) $(Pt_{4} (NH_{3})_{2} (NCS)_{2})$ (4) $(Pt (NH_{3})_{4} (S_{2} CN))^{2 +}$