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Class 12 Exam  >  Class 12 Tests  >  Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Class 12 MCQ

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Class 12 MCQ


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29 Questions MCQ Test - Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds)

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) for Class 12 2024 is part of Class 12 preparation. The Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) questions and answers have been prepared according to the Class 12 exam syllabus.The Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) MCQs are made for Class 12 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) below.
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Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 1
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Only One Option Correct Type

Direction (Q. Nos. 1-28) This section contains 28 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q.

Which has higher van’t Hoff factor value in aqueous solution?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 1

One molecule of potash alum produces 8 ions in solution (K2SO4.AI2(SO4)3.24H2O)
One molecule of Mohr's salt produces 5 ions in solution
(FeSO4).(NH4)2SO4.6H2O) One molecule of potassium ferrocyanide produces 5 ions in solution [K4[Fe(CN)6].
One molecule of carnalite produces 5 ions in solution (KCI-MgCI2.6H2O)

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 2
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A chelating ligand has two or more than two donor atoms to bind a single metal ion. Which of the following is not a chelating agent?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 2

Thiosulphate is not a chelating agent.

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Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 3
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Pick up a poor electrolytic conductor complex in solution,

Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 3

[Co(NH3)3(NO2)3] complex is poor electrolytic conductor.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 4
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How many EDTA molecules are required to make an octahedral complex with a Ca2+ ion?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 4

EDTA is a hexadentate ligand. Its coordination number is Six

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 5
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Which of the following is an outer orbital complex?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 5

Nickel complexes with coordination number six are always outer complexes with Ni (sp3d2) hybridisation.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 6
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The structure of the complexes  [Cu(NH3)4] (ClO4) and  [Cu(NH3)4]ClO4  in solution respectively are
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 6

In the complex [Cu(NH3)4](CIO4), copper has dsp2 (square planar) while in complex [Cu(NH3)4]CIO4, copper has sp3 (tetrahedral) hybridisation.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 7
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EAN value of the complex is not equal to 36 in
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 7

When EAN calcula tion is done for [Ni(H2O)6]2+, i.e. [Z-oxidation number) + 2 x (coordination number)], we get 38. For all others we get 36.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 8
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The correct statement is
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 8

[MnBr4]2- is tetrahedral complex.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 9
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How many moles of AgCl would be obtained from when 100 moles of 0.1 M CoCl3. 5NH3 is treated with eccess AgNO3?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 9

100 mL 0.1 M complex = 0.01 moles

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 10
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The IUPAC name of  [Ni(NH3)4][NiCl4]
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 10

Tetramminenickel (II) tetrachloronickelate (II)

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 11
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Which is the correct?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 11

[Co(en)3]CI3 shows only optical isomerism.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 12
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Extent of crystal field splitting in octahedral complexes of the given metal with particular weak field ligand are such that
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 12

Fe(iii) < Cr(iii) < Rh(iii) < Ir(iii)

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 13
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Which of the following is correct arrangement of ligands in terms of the Dq values of their complexes with any particular 'hard' metal ion?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 13

Cl- < F- <  NCS-< NH3 < CN-

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 14
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Cr3+ form four complexes with four different ligands which are [Cr(CI)6]3- , [Cr(H2O)6]3+, [Cr(NH3)6]3+ and [Cr(CN)6]3- . The order of CFSE (Do) in these com ple xes is in the order
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 14

[CrCI6]3- > [Cr(H2O)6]3+ > [Cr(NH3)6]3+ > [Cr(CN)6]3-

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 15
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The IUPAC name of [Fe(O2)(CN)4Cl]-4 is
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 15

Chlorotetracyano superoxoferrate (II) ion

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 16
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The value of 'spin only' magnetic moment for one of the following configuration in octahedral field is 3.87 BM. The correct one is
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 16

Magnetic moment 3.87 BM means it has three unpaired electrons. This is possible in d3 (in weak as well as strong field ligand)

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 17
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There are four complexes of Ni. Select the complex(es) which will be attracted by magnetic field.

I. [Ni(CN)4]2- II.[NiCl4]2- III.Ni(CO)4 IV. [Ni(H2O)6]2+
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 17

Diamagnetic complexes are [Ni(CN)4]2- and Ni(CO)4.
Paramagnetic complexes are
[NiCI4]2- and [Ni(H2O)6]2+ (attracted)

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 18
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An octahedral com plex with m olecular form ula 5NH3.Cl.SO4 has two isomers A and B. The solution of A gives a white precipitate with AgNO3 solution and the solution of B gives white precipitate with BaCI2 solution .The type of isomerism exhibited by the complex is
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 18

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 19
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Both geometrical and optical isomerism are shown by
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 19

[Co(en)2CI2]+ this has cis and trans isomers.
The cis isomer exists as enantiomeric pair .Hence, total isomers are 3.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 20
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Low spin complex of d6 cation in an octahedral field will have which of the following energy?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 20

CFSE = - (0.4 x 6 Δo + 3P)
(∴ P means pairing energy which is the energy required to pair two electrons against electron-electron repulsion in the same orbital)  

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 21
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The crystal field stabilisation energy(CFSE) and the spin only magnetic moment in Bohr magneton (BM) for the complex K3[Fe(CN)6] respectively, are 
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 21

In K3[Fe(CN)6], iron is in +3 oxidation state.
∴ In strong ligand field, configuration is .  Hence, CFSE is -5 x 0.4 = -2,0 Δo.
Since, it has one unpaired electron, magnetic moment is √3 BM.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 22
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If the bond length of CO bond in carbon monoxide is 1.128 A°,then what is the value of CO bond length in Fe(CO)5?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 22

Due to synergic effect, CO bond order decreases and bond length increases.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 23
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Crystal field theory does not explain which of the following property coordination compounds?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 23

The covalent character of the bond between metal and ligand

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 24
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The correct order of ligand field strength is
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 24

Cl < H2O < NH3 < CO

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 25
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What is(are) number of unpaired electron(s) in the square planer [Pt(CN)4]2- ions?
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 25

The number of unpaired electrons in the square planar [Pt(CN)4]2- is zero.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 26
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In decacarbonyl dimanganese (0), the number of CO groups bonded in between the Mn atoms are
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 26

In decacarbonyl dimanganese (0), the number of CO group bonded in between the Mn atoms are shown in the following figure.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 27
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The ligand that shows synergic effect is 
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 27

CO is a ligand that forms sigma bond with metal by donating electrons and pi bond by accepting electrons from the central metal ion.
This is called synergic effect.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 28
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For the reactions and their equilibrium constants given below:

Q.

The equilibrium constant, K for the reaction
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 28

When an equation is obtained by adding two or more equations the new equilibrium constant is the product of the equilibrium constants of the added equations.
Therefore, K = K1 x K2 x K3.

Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 29
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Statement Type

Direction (Q. No. 29) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Q. 

Statement I : [Fe(CN)6]3- ion shows magnetic moment corresponding to two unpaired electrons.

Statement lI : Because it has d2sp3 type hybridisation.
Detailed Solution for Revisal Problems (Past 13 Year) JEE Main (Coordination Compounds) - Question 29

Iron atom (Z = 26) has electronic configuration 3d64s2. In this complex iron is in +3 oxidation state and has electronic configuration 3d5.
It has been experimentally observed that the complex has one unpaired electron.

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