Coordination Compounds PYQs Set 11 (PDF)

Set 11 of 18 · Questions 301-330 of 522

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Mere Teacher · Previous Year Questions NEET Chemistry · Coordination Compounds · Set 11 (Q301-330)
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301. $Match List-I with List-II LIST-I Coordination Complex (A) [Cr(CN)_{6}]^{3 -} (B) [Fe(H_{2} O)_{6}]^{2 +} (C)[Co(N H_{3})_{6}]^{3 +} (D) [Ni(N H_{3})_{6}]^{2 +} LIST-II Number of unpaired electrons (I) 0 (II) 3 (III) 2 (IV) 4 Choose the correct answer from the options given below:$ (1) $A-II, B-IV, C-I, D-III$ (2) $A-III, B-IV, C-I, D-II$ (3) $A-II, B-I, C-IV, D-III$ (4) $A-IV, B-III, C-II, D-I$ 302. $Consider the complex ions, trans- [Co (en)_{2} Cl_{2}]^{+} (A) and cis - [Co (en)_{2} Cl_{2}]^{+} (B) The correct statement regarding them is$ (1) $both (A) and (B) can be optically active.$ (2) $both (A) and (B) can not be optically active.$ (3) $(A) can not be optically active, but (B) can be optically active.$ (4) $(A) can be optically active, but (B) can not be optically active.$ 303. $N i C l_{2} {P (C_{2} H_{5})_{2} (C_{6} H_{5})}_{2} exhibits temperature dependent magnetic behaviour (paramagnetic/ diamagnetic). The coordination geometries of N i^{2 +} in the paramagnetic and diamagnetic states are respectively$ (1) $tetrahedral and tetrahedral$ (2) $square planar and square planar$ (3) $tetrahedral and square planar$ (4) $square planar and tetrahedral$ 304. $Which one of the following is an inner orbital complex as well as diamagnetic in behaviour ? [Atomic No. Zn = 30, Cr = 24, Co = 27, Ni = 28]$ (1) $[Zn(NH3)6]2+$ (2) $[Ni(NH3)6]2+$ (3) $[Cr(NH3)6]3+$ (4) $[Co(NH3)6]3+$ 305. $A coordination complex compound of cobalt has the molecular formula containing five ammonia molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three mole ions in an aqueous solution. On reacting this solution with excess of A g N O_{3} solution, we get two moles of A g C l precipitate. The ionic formula for this complex would be$ (1) $[C o (N H_{3})_{5} (N O_{2})] C l_{2}$ (2) $[C o (N H_{3})_{5} C l] [C l (N O_{2})]$ (3) $[C o (N H_{3})_{4} (N O_{2}) C l] (N H_{3}) C l$ (4) $(C o (N H_{3})_{5}) [(N O_{2})_{2} C l_{2}]$ 306. $Which of the following facts about the complex [Cr(NH3)6]Cl3 is wrong ?$ (1) $The complex involves d2sp3 hybridisation and is octahedral in shape.$ (2) $The complex is paramagnetic.$ (3) $The complex is an outer orbital complex.$ (4) $The complex gives white precipitate with silver nitrate solution.$ 307. $Which one has largest number of isomers ?$ (1) $[C o (e n)_{2} C l_{2}]^{+}$ (2) $[Co(N H_{3})_{5} Cl]^{2 +}$ (3) $[Ir(P h R_{3})_{2} H(CO)]^{2 +}$ (4) $[R u (N H_{3})_{4} C l_{2}]^{+}$ 308. $Among the following which is not the π ‐bonded organometallic compound?$ (1) $K [P tC l_{3} (η^{2} - C_{2} H_{4})]$ (2) $F e (η^{5} - C_{5} H_{5})_{2}$ (3) $C r (η^{6} - C_{6} H_{6})_{2}$ (4) $(C H_{3})_{4} S n$ 309. $According to Valence Bond Theory, the number of unpaired electrons present in (MnCl_{6})^{3 -}, (Fe (CN)_{6})^{3 -} and (Co (C_{2} O_{4})_{3})^{3 -}, respectively, are$ (1) $0 : 5 : 0$ (2) $4 : 3 : 2$ (3) $4 : 1 : 0$ (4) $5 : 4 : 3$ 310. $In the silver plating of copper, K [A g (C N)_{2}] is used instead of A g N O_{3} . The reason is$ (1) $a thin layer of Ag is formed on C u$ (2) $more voltage is required$ (3) $A g^{+} ions are completely removed from solution$ (4) $less availability of A g^{+} ions, as Cu can not displace Ag from [A g (C N)_{2}]^{-} ion$ 311. $A metal complex absorbed orange light. The colour in which it appears is$ (1) $yellow$ (2) $yellow-green$ (3) $red$ (4) $green-blue$ 312. $Number of possible isomers for the complex [Co (e n)_{2} Cl_{2}] Cl will be (en ethylenediamine)$ (1) $1$ (2) $3$ (3) $4$ (4) $2$ 313. $Consider that a d^{6} metal ion (M^{2 +}) forms a complex with aqua ligands, and the spin only magnetic moment of the complex is 4.90 BM . The geometry and the crystal field stabilization energy of the complex is$ (1) $tetrahedral and - 1.6 Δ_{t} + 1 P$ (2) $octahedral and - 2.4 Δ_{0} + 2 P$ (3) $tetrahedral and - 0.6 Δ_{t}$ (4) $octahedral and - 1.6 Δ_{0}$ 314. $Which among the following is a paramagnetic complex7.$ (1) $[C o (N H_{3})_{6}]^{3 +}$ (2) $[P t (e n) C l_{2}]$ (3) $[C o B r_{4}]^{2 -}$ (4) $M o (C O)_{6}$ 315. $Of the following complex ions, which is diamagnetic in nature?.$ (1) $[N i C 1_{4}]^{2 -}$ (2) $[N i (C N)_{4}]^{2 -}$ (3) $[C u C 1_{4}]^{2 -}$ (4) $(CoF_{6})^{3 -}$ 316. $The sum of coordination number and oxidation number of the metal M in the complex [M (e n)_{2} (C_{2} O_{4})] Cl (where e n is ethylenediamine) is$ (1) $6$ (2) $7$ (3) $8$ (4) $9$ 317. $What is the number of unpaired electrons of nickel observed in (Ni (CN)_{4})^{2 -} ?$ (1) $zero$ (2) $2$ (3) $6$ (4) $4$ 318. $Nickel (Z = 28) combines with a uninegative monodentate ligand X^{-} to form a paramagnetic complex [N i X_{4}]^{2-} . The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively :$ (1) $one, tetrahedral$ (2) $two, tetrahedral$ (3) $one, square planar$ (4) $two, square planar$ 319. $What is the correct electronic configuration of the central atom in K_{4} (Fe (CN)_{6}) based on crystal field theory?$ (1) $t_{2 g}^{4} e_{g}^{2}$ (2) $t_{2 g}^{6} e_{g}^{0}$ (3) $e^{3} t_{2 g}^{3}$ (4) $e^{4} t_{2 g}^{2}$ 320. $The values of the crystal field stabilization energies for a high spin d^{6} metal ion in octahedral and tetrahedral fields, respectively,$ (1) $- 1.6 Δ_{0} and - 0.4 Δ_{t}$ (2) $- 2.4 Δ_{0} and - 0.64 Δ_{t}$ (3) $- 0.4 Δ_{0} and - 0.27 Δ_{t}$ (4) $- 0.4 Δ_{0} and - 0.6 Δ_{t}$ 321. $The spin only magnetic moment of (MnBr_{4})^{x -} is 5.9 BM . The geometry of the complex and x respectively are$ (1) $tetrahedral, 1$ (2) $square planar, 1$ (3) $square planar, 2$ (4) $tetrahedral, 2$ 322. $Match the LIST-I with LIST-II LIST-I (Molecules/ion) LIST-II (Hybridization of central atom) A. PF_{5} I dsp^{2} B. SF_{6} II s p^{3} d C. Ni (CO)_{4} III sp^{3} d^{2} D. (PtCl_{4})^{2 -} IV sp^{3} Choose the correct answer from the options given below:$ (1) $A-IV, B-I, C-II, D-III$ (2) $A-III, B-I, C-IV, D-II$ (3) $A-II, B-III, C-IV, D-I$ (4) $A-I, B-II, C-III, D-IV$ 323. $Which one of the following species responds to a external magnetic field?$ (1) $[F e (H_{2} O)_{6}]^{3 +}$ (2) $[N i (C N)_{4}]^{2 -}$ (3) $[C o (C N)_{6}]^{3 -}$ (4) $[N i (C O)_{4}]$ 324. $Jahn-Teller effect is not observed in high spin complexes of$ (1) $d9$ (2) $d7$ (3) $d8$ (4) $d4$ 325. $Identify the coordination complexes in which the central metal ion has d^{4} configuration. (A) (FeO_{4})^{2 -} (B) (Mn (CN)_{6})^{3 -} (C) (Fe (CN)_{6})^{3 -} (D) (E) (NiF_{6})^{2 -} Choose the correct answer from the options given below:$ (1) $(B), (C) and (D) only$ (2) $(C) and (E) only$ (3) $(B) and (D) only$ (4) $(A), (B) and (E) only$ 326. $Arrange the following Cobalt complexes in the order of increasing Crystal Field Stabilization Energy (CFSE)value. Complexes: [C o F_{6}]^{3 -}, [Co(H_{2} O)_{6}]^{2 +}, [Co(N H_{3})_{6}]^{3 +} and [Co(en)_{3}]^{3 +} A B C D Choose the correctoption :$ (1) $A < B < C < D$ (2) $B < A < C < D$ (3) $B < C < D < A$ (4) $C < D < B < A$ 327. $Which of the following ligands is expected to be bidentate?.$ (1) $C H_{3} N H_{2}$ (2) $C H_{3} C \equiv N$ (3) $B r$ (4) $C_{2} O_{4}^{2 -}$ 328. $Number of stereoisomers possible for the complexes, (CrCl_{3} (py)_{3}) and (CrCl_{2} (ox)_{2})^{3 -} are respectively (py = pyridine, ox = oxalate)$ (1) $3 & 3$ (2) $2&3$ (3) $1 & 2$ (4) $2 & 2$ 329. $The coordination number and oxidation state of Cr in K_{3} C r (C_{2} O_{4})_{3} are respectively$ (1) $3 and + 3$ (2) $3 and 0$ (3) $6 and + 3$ (4) $4 and + 2$ 330. $Which one of the following metal complexes is most stable?$ (1) $[C o (e n) (N H_{3})_{4}] C l_{2}$ (2) $(Co (en)_{3}) Cl_{2}$ (3) $[C o (e n)_{2} (N H_{3})_{2}] C l_{2}$ (4) $[C o (N H_{3})_{6}] C l_{2}$