NEET Practice Questions - Chemistry - Coordination Compounds

In which of the following coordination entities the magnitude of $∆$₀(CFSE in octahedral field)will be maximum?

(a) [Co(H₂O)₆]³⁺

(b) [Co(NH₃)₆]³⁺

(c) [Co(CN)₆]^3-

(d) [Co(C₂O₄)₃]^3-

Fe₂(CO)₉ is diamagnetic.Which of the following reasons is correct?

(a) Presence of one CO as bridge group

(b) Presence of monodentate ligand

(c) Metal-metal(Fe-Fe) bond in molecule

(d) Resonance hybridization of CO

From the stability constant (hypothetical  values)given below, predict which is the strongest ligand?

(a) Cu²⁺+4NH₃$\rightleftharpoons$[Cu(NH₃)₄]²⁺;(k=4.5x10¹¹)

(b) Cu²⁺+4CN$\rightleftharpoons$[Cu(CN)₄]^2-;(K=2.0x10²⁷)

(c) Cu²⁺+2en$\rightleftharpoons$[Cu(en)₂]²⁺;(K=3.0x10¹⁵)

(d) Cu²⁺+4H₂O$\rightleftharpoons$[Cu(H₂O)₄]²⁺;(K=9.5x10⁸)

Which does not obey EAN rule?

(a) [Cu(NH₃)₄]²⁺

(b) [Zn(OH)₄]^2-

(c) [HgI₄]^2-

(d) Fe(CO)₅

The coordination number and oxidation state of Cr in K₃[Cr(C₂O₄)₃] are respectively

(a) 3 and +3

(b) 3 and 0

(c) 6 and +3

(d) 4 and +2

Which one of the following octahedral complexes will not show geometrical isomerism?(A and B are monodentate ligands)

(a) [MA₄B₂]

(b) [MA₅B]

(c) [MA₂B₄]

(d) [MA₃B₃]

According to IUPAC nomenclature sodium nitroprusside is named as

(a) sodium pentacyanonitrosyl ferrate(II)

(b) sodium pentacyanonitrosyl ferrate(III)

(c) sodium nitroferricyanide

(d) sodium nitroferrocyanide

Amoung the following which is not the $\mathrm{\pi }$-bonded organomettalic compound?

(a) K[PtCl₃(${\eta }^{\mathit{2}}$-C₂H₄)]

(b) Fe(${\eta }^5$-C₂H₅)₂

(c) Cr(${\eta }^6$-C₆H₆)₂

(d) (CH₃)₄Sn

IUPAC name of [Pt(NH₃)₃ (Br)(NO₂)Cl]Cl is

(a) triamminebromochloronitroplatinum(IV)Chloride

(b) triamminebromonitrocholoroplatinum(IV)Chloride

(c) triamminechlorobromonitroplatinum(IV)Chloride

(d)triamminenitrochlorobromoplatinum(IV)Chloride

The equation which is balanced and represents the correct product(s) is:

(a) Li₂O +2KCl$\to$2LiCl+K₂O

(b) [CoCl(NH₃)₅]⁺+5H⁺$\to$Co²⁺+5NH₄⁺+Cl^-

(c) [Mg(H₂O)₆]²⁺ +(EDTA)^4-$\stackrel{\mathrm{Excess} \mathrm{NaOH}}{\to }$[Mg(EDTA)]²⁺+6H₂O

(d) CuSO₄+4KCN$\to$K₂[Cu(CN)₄+K₂SO₄