Coordination Compounds PYQs Set 18 (PDF)

Set 18 of 18 · Questions 511-522 of 522

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Mere Teacher · Previous Year Questions NEET Chemistry · Coordination Compounds · Set 18 (Q511-522)
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511. $The number of geometrical isomers of the complex [Co (NO_{2})_{3} (NH_{3})_{3}] is$ (1) $4$ (2) $0$ (3) $2$ (4) $3$ 512. $Among the given complexes that possess "CO" ligand bridges are (Co_{2} (CO)_{8}) (Fe_{3} (CO)_{12}) I II (Mn_{2} (CO)_{10}) (Fe_{2} (CO)_{9}) III IV$ (1) $I, II and III$ (2) $II, III and IV$ (3) $I, II and IV$ (4) $I, III and IV$ 513. $Cobalt chloride when dissolved in water forms pink colored complex X which has octahedral geometry. This solution on treating with cone HC1 forms deep blue complex, Y which has a Z geometry. X, Y and Z, respectively, are$ (1) $X=[Co(H_{2} O)_{6}]^{2 +}, Y=[C o C l_{4}]^{2 -}, Z=Tetrahedral$ (2) $X= [C o (H_{2} O_{6})]^{2 +}, Y= [C o C I_{6}]^{3 -}, Z=Octahedral$ (3) $X=[Co(H_{2} O)_{6}]^{3 +}, Y=[C o C l_{6}]^{3 -}, Z=Octahedral$ (4) $X= [C o (H_{2} O)_{4} C l_{2}]^{+}, Y= [C o C l_{4}]^{2 -}, Z=Tetrahedral$ 514. $For the crystal field splitting in octahedral complexes,$ (1) $the energy of the e_{g} orbitals will decrease by (3/5) Δ_{0} and that of the t_{2 d} will increase by (2/5) Δ_{0}$ (2) $the energy of the e orbitals will increase by (3/5) Δ_{0} and that of the t_{2 g} will decrease by (2/5) Δ_{o}$ (3) $the energy of the e_{g} orbitals will increase by (3/5) Δ_{0} and that of the t_{2 g} will increase by (2/5) Δ_{0}$ (4) $the energy of the e_{g} orbitals will decrease by (3/5) Δ_{0} and that of t_{2 g} will decrease by (2/5) Δ_{0} .$ 515. $The correct order of the stoichiometries of A g C l formed when A g N O_{3} in excess is treated with the complexes: C o C l_{3} .6 N H_{3}, C o C l_{3} .5 N H_{3}, C o C l_{3} .4 N H_{3} respectively is$ (1) $3 A g C l, 1 A g C l, 2 A g C l$ (2) $3 A g C l, 2 A g C l, 1 A g C l$ (3) $2 A g C l, 3 A g C l, 2 A g C l$ (4) $1 A g C l, 3 A g C l, 2 A g C l$ 516. $The formula of dichlorobis(urea)copper(II) is$ (1) $[C u O = C (N H_{2})_{2} C l] C l$ (2) $(CuCl_{2} (O = C (NH_{2})_{2})_{2})$ (3) $[C u O = C (N H_{2})_{2} C l_{2}$ (4) $[C u C l_{2} {O = C (N H_{2})_{2}}_{2}]$ 517. $Trien is$ (1) $Hexa dentate, Mono anionic$ (2) $tetradentate, neutral$ (3) $tetradentate, dianion$ (4) $Mono dentate, anion$ 518. $Iron carbonyl, Fe (C O)_{5} is :$ (1) $tetranuclear$ (2) $dinuclear$ (3) $trinuclear$ (4) $mononuclear$ 519. $Among [N i (C O)_{4}], [N i (C N)_{4}]^{2 -}, [N i C l_{4}]^{2 -} species, the hybridisation states at the Ni atom are, respectively [Atomic number of N i = 28]$ (1) $s p^{3}, d s p^{2}, d s p^{2}$ (2) $s p^{3}, d s p^{2}, s p^{3}$ (3) $s p^{3}, s p^{3}, d s p^{2}$ (4) $d s p^{2}, s p^{3}, s p^{3}$ 520. $[C o_{2} (C O)_{8}] displays :$ (1) $one Co-Co bond, four terminal CO and four bridging CO$ (2) $one Co-Co bond, six terminal CO and two bridging CO$ (3) $no Co-Co bond, four terminal CO and four bridging CO$ (4) $no Co-Co bond, six terminal CO and two bridging CO$ 521. $The correct IUPAC name for [CrF_{2} (en)_{2}] Cl is$ (1) $chlorodifluoridoethylenediaminechromium (III) chloride$ (2) $difluoridobis (ethylene diamine)chromium (III) chloride$ (3) $difluorobis‐(ethylene diamine) chromium (III) chloride$ (4) $chlorodifluoridobis (ethylene diamine) chromium (III)$ 522. $A correct statement is$ (1) $(Co (NH_{3})_{6})^{2 +} is paramagnetic$ (2) $(MnBr_{4})^{2 -} is tetrahedral$ (3) $(CoBr_{2} (en)_{2})^{-} exhibits linkage isomerism$ (4) $(Ni (NH_{3})_{6})^{2 +} is an inner orbital complex.$