Coordination Compounds PYQs Set 10 (PDF)

Set 10 of 18 · Questions 271-300 of 522

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Mere Teacher · Previous Year Questions NEET Chemistry · Coordination Compounds · Set 10 (Q271-300)
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271. $C u S O_{4} when reacts with K C N forms C u C N, which is insoluble in water. It is soluble in excess of K C N, due to formation of the following complex$ (1) $K_{2} [C u (C N)_{4}]$ (2) $K_{3} [C u (C N)_{4}]$ (3) $C u C N_{2}$ (4) $C u [K C u (C N)_{4}]$ 272. $Atomic number of Cr, Fe and Co are 24,26 and 27 respectively. Which of the following inner orbital octahedral complexes are paramagnetic?$ (1) $(Co (NH_{3})_{6})^{3 +}$ (2) $(Co (CN)_{3})^{3 +}$ (3) $(Fe (CN)_{6})^{4 -}$ (4) $(Cr (CN)_{6})^{3 -}$ 273. $An octahedral complex of C o^{3 +} is diamagnetic. The hybridisation involved in the formation of the comlex is:$ (1) $s p^{3} d^{2}$ (2) $d s p^{2}$ (3) $d^{2} s p^{3}$ (4) $s p^{3} d$ 274. $The octahedral complex of a metal ion M^{3 +} with four monodentate ligands L_{1}, L_{2}, L_{3} and L_{4} absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is :$ (1) $L_{4} < L_{3} < L_{2} < L_{1}$ (2) $L_{1} < L_{3} < L_{2} < L_{4}$ (3) $L_{3} < L_{2} < L_{4} < L_{1}$ (4) $L_{1} < L_{2} < L_{4} < L_{3}$ 275. $The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are:$ (1) $8 and 6$ (2) $6 and 8$ (3) $6 and 6$ (4) $8 and 8$ 276. $How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a C a^{2 +} ion ?$ (1) $Six$ (2) $Three$ (3) $One$ (4) $Two$ 277. $Which one of the following is wrongly matched?$ (1) $(Cu (NH_{3})_{4})^{2 +} - square planar$ (2) $(Ni (CO)_{4}) - neutral ligand$ (3) $(Fe (CN)_{6})^{3 -} - s p^{3} d^{2}$ (4) $(Co (en)_{3})^{3 +} - follows EAN rule$ 278. $Given below are two statements: Statement I: A homoleptic octahedral complex, formed using monodentate ligands, will not show stereoisomerism. Statement II: cis- and trans- platin are heteroleptic complexes of Pd. In the light of the above statements, choose the correct answer from the options given below:$ (1) $Statement I is true but Statement II is false$ (2) $Both Statement I and Statement II are true$ (3) $Both Statement I and Statement II are false$ (4) $Statement I is false but Statement II is true$ 279. $The value of 'spin only' magnetic moment for one of the following configurations is 2.84 BM. The correct one is: (Assuming octahedral complex)$ (1) $d^{4} (in strong field ligand)$ (2) $d^{4} (in weak field ligand)$ (3) $d^{3} (in weak as well as strong field ligand)$ (4) $d^{5} (in strong field ligand)$ 280. $The total number of stereoisomers for the complex [Cr(ox)_{2} ClBr]^{3 -} (where ox = oxalate) is$ (1) $3$ (2) $2$ (3) $4$ (4) $1$ 281. $The number of possible isomers of an octahedral complex [Co(C2O4)2(NH3)2]- is :$ (1) $1$ (2) $2$ (3) $3$ (4) $4$ 282. $Given below are two statements : Statement (I) : Dimethyl glyoxime forms a six membered covalent chelate when treated with NiCl_{2} solution in presence of NH_{4} OH . Statement (II) : Prussian blue precipitate contains iron both in (+2) and (+3) oxidation states. In the light of the above statements, choose the most appropriate answer from the options given below:$ (1) $Statement I is false but Statement II is true$ (2) $Both Statement I and Statement II are true$ (3) $Both Statement I and Statement II are false$ (4) $Statement I is true but Statement II is false$ 283. $Which of the following complex ions is not expected to absorb visible light ?$ (1) $[Ni(CN)4]2-$ (2) $[Cr(NH3)6]3+$ (3) $[Fe(H2O)6]2+$ (4) $[Ni(H2O)6]2+$ 284. $According to the valence bond theory the hybridization of central metal atom is d s p^{2} for which one of the following compounds?$ (1) $N i C l_{2} .6 H_{2} O$ (2) $K_{2} [N i (C N)_{4}]$ (3) $[N i (C O)_{4}]$ (4) $N a_{2} [N i C l_{4}]$ 285. $The hybridization involved in complex [N i (C N)_{4}]^{2 -} (At.No.Ni = 28) is$ (1) $s p^{3}$ (2) $d^{2} s p^{2}$ (3) $d^{2} s p^{3}$ (4) $d s p^{2}$ 286. $The octahedral diamagnetic low spin complex among the following is$ (1) $[Co(N H_{3})_{6}]^{3 +}$ (2) $[C o F_{6}]^{3 -}$ (3) $[C o C l_{6}]^{3 -}$ (4) $[N i C l_{4}]^{2 -}$ 287. $Number of stereoisomers exhibited by (Co (en)_{2} Cl_{2})^{+} is$ (1) $2$ (2) $5$ (3) $3$ (4) $4$ 288. $Out of T i F_{6}^{2 -}, C o F_{6}^{3 -}, C u_{2} C l_{2} and N i C l_{4}^{2 -} Z of T i = 22, C o = 27, C u = 29, N i = 28 the colourless species are$ (1) $C u_{2} C l_{2} and N i C l_{4}^{2 -}$ (2) $T i F_{6}^{2 -} and C u_{2} C l_{2}$ (3) $and N i C l_{4}^{2 -}$ (4) $T i F_{6}^{2 -} and$ 289. $In which of the following complexes the CFSE, Δ_{o} will be equal to zero?$ (1) $(Fe (en)_{3}) Cl_{3}$ (2) $K_{4} (Fe (CN)_{6})$ (3) $(Fe (NH_{3})_{6}) Br_{2}$ (4) $K_{3} (Fe (SCN)_{6})$ 290. $Geometrical shapes of the complexes formed by the reaction of N i^{2 +} with C l^{-}, C N^{-} and H_{2} O, respectively, are$ (1) $octahedral, tetrahedral and square planar$ (2) $tetrahedral, square planar and octahedral$ (3) $square planar, tetrahedral and octahedral$ (4) $octahedral, square planar and octahedral$ 291. $Complete removal of both the axial ligands (along the z -axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale)$ (1) (2) (3) (4) 292. $Identify the diamagnetic octahedral complex ions from below; (A) (Mn (CN)_{6})^{3 -} (B) (Co (NH_{3})_{6})^{3 +} (C) (Fe (CN)_{6})^{4 -} (D) (Co (H_{2} O)_{3} F_{3}) Choose the correct answer from the options given below:$ (1) $B and C Only$ (2) $A and C Only$ (3) $B and D Only$ (4) $A and D Only$ 293. $The complex that can show optical activity$ (1) $cis [Fe (NH_{3})_{2} (CN)_{4})^{-}$ (2) $trans - [Cr (Cl_{2}) (ox)_{2}]^{3 -}$ (3) $trans - [Fe (NH_{3})_{2} (CN)_{4}]$ (4) $cis - [CrCl_{2} (ox)_{2}]^{3 -} (ox = oxalate)$ 294. $The magnetic moment of the high spin complex is 5.92 BM . What is the electronic configuration?$ (1) $t_{2 g}^{3} e_{g}^{1}$ (2) $t_{2 g}^{4} e_{g}^{2}$ (3) $t_{2 g}^{3} e_{g}^{2}$ (4) $t_{2 g}^{5} e_{g}^{0}$ 295. $The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to + 3 state is:$ (1) $(Co (phen)_{3})^{2 +}$ (2) $(Ni (phen)_{3})^{2}$ (3) $(Zn (phen)_{3})^{2 +}$ (4) $(Fe (phen)_{3})^{2}$ 296. $The set with only ambidentate ligands in the following is$ (1) $NO_{3}^{⊖}, Br^{⊖}, C_{2} O_{4}^{2 ⊖}$ (2) $NO_{2}^{⊖}, CN^{⊖}, SCN^{⊖}$ (3) $NO_{2}^{⊖}, C_{2} O_{4}^{2 ⊖}, NH_{3}$ (4) $SCN^{⊖}, CO, NH_{3}$ 297. $The correct order of intensity of colors of the compounds is:$ (1) $[N i (C N)_{4}]^{2 -} > [N i C l_{4}]^{2 -} > [N i (H_{2} O)_{6}]^{2 +}$ (2) $[N i (H_{2} O)_{6}]^{2 +} > [N i C l_{4}]^{2 -} > [N i (C N)_{4}]^{2 -}$ (3) $[N i C l_{4}]^{2 -} > [N i (H_{2} O)_{6}]^{2 +} > [N i (C N)_{4}]^{2 -}$ (4) $[N i C l_{4}]^{2 -} > [N i (C N)_{4}]^{2 -} > [N i (H_{2} O)_{6}]^{2 +}$ 298. $The number of geometric isomers that can exist for square planar [P t (C l) (p y) (N H_{3}) (N H_{2} O H)]^{+} is (py = pyridine ) :$ (1) $2$ (2) $3$ (3) $4$ (4) $6$ 299. $Identify, from the following, the diamagnetic, tetrahedral complex$ (1) $(Ni (Cl)_{4})^{2 -}$ (2) $(Co (C_{2} O_{4})_{3})^{3 -}$ (3) $(Ni (CN)_{4})^{2 -}$ (4) $(Ni (CO)_{4})$ 300. $The number of bridging CO ligand (s) and Co - Co bond (s) in Co_{2} (CO)_{8} respectively are:$ (1) $2 and 1$ (2) $2 and 0$ (3) $0 and 2$ (4) $4 and 0$