Class 12 Chemistry MCQs Coordination Compounds for JEE/NEET

Here, you will get Class 12 Chemistry MCQ of Chapter 9 Coordination Compounds for cracking JEE and NEET/AIIMS. By solving these MCQs of Class 12 Chemistry Chapter 9 Coordination Compounds, you will get the confidence to crack JEE or NEET. Practice MCQ Questions for Class 12 Chemistry with Answers on a daily basis and score well in exams. 

Coordination Compounds 12 MCQs Questions with Answers

Which of the following compounds has tetrahedral geometry?
(a) [Ni(CN)4]2-
(b) [Pd(CN)4]2-
(c [PdCl4]2-
(d) [NiCl4]2-

Answer: (d) [NiCl4]2-

According to Werner’s theory of coordination compounds
(a) Primary valency is ionisable
(b) Secondary valency is ionisable
(c) Primary and secondary valencies are lonisable
(d) Neither primary nor secondary valency ¡s ionisable

Answer: (a) Primary valency is ionisable

The ligand N(CH2CH2NH2) is
(a) bidentate
(b) tridentate
(c) tetradentate
(d) pentadentate

Answer: (c) tetradentate

Which of the following ligands form a chelate?
(a) Acetate
(b) Oxalate
(c) Cyanide
(d) Ammonia

Answer: (b) Oxalate

Which of the following ligands will not show chelation?
(a) EDTA
(b) DMG
(c) Ethene-1, 2-diamine
(d) SCN

Answer: (d) SCN–

The oxidation number of Cr in a [Cr(NH3)2F4] complex is
(a) II
(b) III
(c) IV
(d) VI

Answer: (b) III

The name of [Co(NH2)3 (NO2)3] is
(a) Tinitrotriamminecobalt(III)
(b) Trinjtrotriamminecobalt(II)
(c) Trirtitrotriamjninecobalt (III) ion
(d) TrinitrotnamminecobaHate (III)

Answer: (a) Tinitrotriamminecobalt(III)

The number of halide ions in [Pt(NH3)3Cl3Br]Cl will be
(a) 4
(b) 3
(c) 2
(d) 1

Answer: (d) 1

One among the following is an example of hexadentate ligands
(a) 2,2-bipyridyl
(b) ethylenediammine tetra acetate ion
(c) dimethyl glyoxime
(d) Tetracarbonyl nickel

Answer: b) ethylenediammine tetra acetate ion

The correct structural formulae of Zeise’s salt is
(a) K+ [PtCl3(C2H4)]
(b) K+ [PtCl2-η²-(C2H4)]Cl
(c) K2 [PtCl3-η²-C2H4)]
(d) K+ [PtCl3-η²-(C2H4)]

Answer: (d) K+ [PtCl3-η²-(C2H4)]–

Amongst Ni (CO)4, [Ni(CN)4]2- and NiCl42-
(a) Ni(CO)4 and NiCl42- are diamagnetic and [Ni(CN)4]2- is paramagnetic
(b) NiCl42- arrd [Ni(CN)4]2- are diamagnetic and Ni(CO)4 is paramagnetic.
(c) Ni(CO)4 and [Ni(CN)4]2- are diamagnetic and [NiCl4]2- is paramagnetic.
(d) Ni(CO)4 is diamagnetic and [NiCl4]2- and [Ni(CN)4]2- are paramagnetic.

Answer: (c) Ni(CO)4 and [Ni(CN)4]2- are diamagnetic and [NiCl4]2- is paramagnetic.

Which of the following has magnesium?
(a) Chlorophyll
(b) Haemocyanin
(c) Carbonic anhydrate
(d) Vitamin B12

Answer: (a) Chlorophyll

EDTA is used for the estimation of
(a) Na+ and K+ ions
(b) Cl and Br ions
(c) Cu2+ and Cs+ ions
(d) Ca2+ and Mg2+ ions

Answer: (d) Ca2+ and Mg2+ ions

Which of these statements about [Co(CN)6]3- is true?
(a) It has 4 unpaired electron, high spin
(b) No unpaired electron, high spin
(c) No unpaired electron, low spin
(d) 4 unpaired electron, low spin

Answer: (c) No unpaired electron, low spin

The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with complexes: COCl3.6NH3, C0Cl3.5NH3, C0Cl3.4NH3 respectively is
(a) 3AgCl, lAgCl, 2AgCl
(b) 3AgCl, 2AgCl, 1AgCl
(c) 2AgCl, 3AgCl, 2AgCl
(d) lAgCl, 3AgCl, 2AgCl

Answer: (b) 3AgCl, 2AgCl, 1AgCl

The correct IUPAC name of the coordination compound K3|Fe(CN)5NO| is
(a) Potassium pentacyanonitrosylferrate (II)
(b) Potassium pentacyanonitroferrate (II)
(c) Potassium nitritopentacyanoferrate (IV)
(d) Potassium nitritepentacynanoiron (II)

Answer: (a) Potassium pentacyanonitrosylferrate (II)

|Pt(NH3)4| |CuCl4| and |Cu(NH3)4||PtCl4| are known as
(a) ionisation isomers.
(b) coordination isomers
(c) linkage isomers
(d) polymerisation isomers

Answer: (b) coordination isomers

Which of the following will not show geometrical isomerism?
(a) [Cr(NH3)4Cl2]Cl
(b) [Co(en)2Cl2]Cl
(c) [(Co(NH3)5NO2]Cl2
(d) [Pt(NH3)2Cl2]

Answer: (c) (Co(NH3)5NO2]Cl2

Which of the following ligands is a bidentate ligand?
(a) Py
(b) Bipy
(c) dien
(d) EDTA

Answer: (b) Bipy

In Ni (CO)4, the nickel atom is ……… hybridised
(a) sp²
(b) sp³
(c) dsp²
(d) sp³d

Answer: (b) sp³

The hybridisation involved in [Co(C2O4)3]3- is
(a) sp3d2
(b) sp3d3
(c) dsp3
(d) d2sp3

Answer: (d) d2sp3

On treatment of 100 mL of 0.1 MCOCl3.6H2O with excess of AgNO3, 1.2 × 1022 ions are precipitated. The complex is
(a) [Co(H2O)4Cl2]Cl.2H2O
(b) [Co(H2O)3Cl3]3H2O
(c) [Co(H2O)6] Cl3
(d) [Co(H2O)5 Cl] Cl2.H2O

Answer: (d) [Co(H2O)5 Cl] Cl2.H2O

The CFSE for octahedral [CoCl6]4- is 18,000 cm-1. The CFSE for tetrahedral [CoCl4]2- will be
(a) 18,000 cm-1
(b) 16,000 cm-1
(c) 8,000 cm-1
(d) 20,000 cm-1

Answer: (c) 8,000 cm-1

A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?
(a) thiosulphato
(b) oxalato
(c) glycinato
(d) ethane-1, 2-diamine

Answer: (a) thiosulphato

Mohr’s salt is
(a) Fe2(SO4) 3 . (NH4)2SO. 6H2O
(b) FeSO4 . (NH4)2 . SO4 . 6H2O
(c) MgSO4 . 7H2O
(d) FeSO4 . 7H2O

Answer: (b) FeSO4 . (NH4)2 . SO4 . 6H2O

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