MCQ Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 12

The most stable complex among the following is:

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$[Pd(CN)_4]^{4-}$
0%
$[Fe(CO)_5]$
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$[Ni(CN)_4]^{4-}$
0%
$[Ni(CN)_4]^{3-}$

Which of the following has longest C-O bond length? (Free C-O bond length CO is

$1.128\overset{o}{A}$ ).

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$[Mn(CO)_6]^+$
0%
$[Ni(CO)_4]$
0%
$[Co(CO)_4]^{\circleddash}$
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$[Fe(CO)_4]^{2-}$

The incorrect statement about compound mercury tetrathiocyanatocobaltate(III)

0%
It cannot show structure isomerism
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Compound is octaherdral
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The formula of compound is $Hg[Co(SCN)_4]$
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Coordination number of $Co$ is $4$

A complex of iron and cynide is

$100 \%$ ionised at

$1 m$ if its elevation in boiling point is

$2.08^{o}$ (

${K_b}=0.52^{o}mol/kg$ ) then the complex is:

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${K_3}[{Fe(C{N)_6}}]$
0%
$Fe{(CN)_2}$
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${K_4}[{Fe(C{N)_6}}]$
0%
$Fe{(CN)_4}$

The total number of possible isomers for the square planar

$[Pt(Cl)(NO_2)(NO_3)(SCN)]^{2-}$ is :

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$12$
0%
$8$
0%
$16$
0%
$24$

Which of the following complexes is/are expected to exhibit isomerism?

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$[Pt(NH_{3})_{2}Cl_{2}]$
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$[Ni(NH_{3})_{2}Cl_{2}]$
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$[Ni(en)_{3}]^{2+}$
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$[Ni(NH_{3})_{4}(H_{2}O)_{2}]^{2+}$

Which is the following complex shown optical activity?

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$trans-\left[ CO\left( ox \right) _{ 2 }{ Cl }_{ 2 } \right] ^{ 3- }$
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$\left[ CO\left( NH_{ 3 } \right) _{ 3 }{ Cl }_{ 3 } \right]$
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$\left[ Fe\left( edta \right) \right] ^{ \_ }$
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$cis-\left[ Pt\left( NH_{ 3 } \right) _{ 2 }{ Cl }_{ 2 } \right]$

The total number of possible isomer for the complex complex:-

$[Cu(NH_{3})_{4}][PtCl_{4}]$

0%
3
0%
6
0%
5
0%
4

The metal d-orbitals that are directly facing the ligands in

$K_{3}[Co(CN)_{6}]$ are:

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$d_{xz}, d_{yz}$ and $d_{z^{2}}$
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$d_{xy}, d_{xz}$ and $d_{yz}$
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$d_{xy}$ and $d_{x^{2} - y^{2}}$
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$d_{x^{2} - y^{2}}$ and $d_{z^{2}}$

Explanation

$K_{3}[Co(CN)_{6}]$

$Co^{3+} \rightarrow [Ar]_{18}3d^{6}$ .

Here since the coordination number of

$Co$ is 6, thus it will form an octahedral complex.

Thus, according to CFT, the orbitals which are in the direction of metal is

$d_{x^2-y^2}$ and

$d_{z^2}$ .

1142333_1331691_ans_2e691c7f346f4e5da16308660041b2ec.jpg

The number of isomers of

$[Co(NH_3)_3Cl_3]$ complex and the secondary valency of the metal ion in the complex, respectively, are:

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$3$ & $3$
0%
$2$ & $3$
0%
$2$ & $6$
0%
$3$ & $6$

The number of ions produced by potassium ferric cyanide in solution is:

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2
0%
3
0%
4
0%
5

For complexes : (i)

$CoCl_{3}, 6NH_{3}$ (ii)

$CoCl_{3}. 5NH_{3}$ (iii)

$CoCl_{3}. 4NH_{3}$ primary valency in I, II and III are respectively.

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$6, 5, 4$
0%
$3, 2, 1$
0%
$0, 1, 2$
0%
$3, 3, 3$

Select the correct statement(s) about "Ziese's salt'',

$K[PtCl_{3}(\eta^ {2}-C_{2}H_{4})]$ .

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It has only two types of $M-Cl$ bond length
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$E.A.N=84$
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It is a $\pi-$ bonded organometallic compound
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All of these

In the following reaction the major complex product is

$[PtCl_{4}]^{2-}+2NH_{3}\rightarrow\ [PtCl_{2}(NH_{3})_{2}]+2Cl^{-}$

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cis
0%
trans
0%
anyone
0%
can't be predicted

Number of ions present in

$K_{4}[Fe(CN)_{6}]$

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$2$
0%
$10$
0%
$3$
0%
$5$

The primary valency of iron in

${{\text{K}}_{\text{4}}}\left[ {{\text{Fe}}{{\left( {{\text{CN}}} \right)}_{\text{6}}}} \right]$ is

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1
0%
2
0%
3
0%
4

Consider the following two complex ions:

${[Co{F}_{6}]}^{3-}$ and

${ \left[ Co{ \left( { C }_{ 2 }{ O }_{ 4 } \right) }_{ 3 } \right] }^{ 3- }$ . Which of the following statement(s) is/are false?

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Both are octahedral
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${ \left[ Co{ \left( { C }_{ 2 }{ O }_{ 4 } \right) }_{ 3 } \right] }^{ 3- }$ is diamagnetic while ${[Co{F}_{6}]}^{3-}$ is paramagnetic
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Both are outer orbitals complexes
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In both the complexes, the central metal is in the same oxidation state

Which of the following statement is wrong:

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Hybridisation is the mixing of atomic orbitals prior to their combining into molecular orbitals
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$sp^2$ hybrid orbital are formed from two p atomic orbitals and one s atomic orbital
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$dsp^2$ hybrid orbitals are all at $90^o$ to one another
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$sp^3d^2$ hybrid orbitals are directed towards the corners of a regular tetrahedron

What are the hybridization of

$Ni$ and geometry of molecule

${ K }_{ 4 }[Ni{ (CN) }_{ 4 }]$ ?

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${ sp }^{ 3 }$ , square planar
0%
${ dsp }^{ 2 }$ , tetrahedral
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${ sp }^{ 3 }$ , tetrahedral
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${ dsp }^{ 2 }$ , square planar

The formula of the complex hydridotrimethoxoborate (III) ion is:

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$[BH(OCH_{3})_{3}]^{-2}$
0%
$[BH_{2}(OCH_{3})_{3}]^{-2}$
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$[BH(OCH_{3})_{3}]^{-}$
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$[BH(OCH_{3})_{3}]^{+}$

Primary and secondary valency of Pt in

$\left[ Pt{ \left( en \right) }_{ 2 }{ Cl }_{ 2 } \right] { Cl }_{ 2 }$ are respectively

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$4,4$
0%
$4,6$
0%
$6,4$
0%
$2,6$

How many ions are produced in aqueous solution of

$\left[ Co\left( { H }_{ 2 }O \right) _{ 6 } \right] { Cl }_{ 2 }$ ?

0%
2
0%
3
0%
4
0%
6

$A+B$

$\rightleftharpoons$

$C+D$ if initially the concntration of A and B are both equal but at equilibium concentration of D will twice that of A, then what will be the equilibium constant of the reaction?

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1
0%
2
0%
3
0%
4

What is the configuration of

$Cr^{+3}$ according to C.F.T. in aqueous medium?

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$t^2_{2g}e^1_g$
0%
$t^3_{2g}e^0_g$
0%
$t^1_{2g}e^2_g$
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$t^0_{2g}e^3_g$

Calculate the oxidation number of

$Fe$ in

${ Fe }_{ 4 }\left[ Fe\left( CN \right) _{ 6 } \right] _{ 3 }$

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+3, +2
0%
+3, +3
0%
+2, +2
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+4, +3

Magnetic moment (spin only) of an octahedron complex having CFSE

$= - 0.8 \Delta _ { 0 }$ and surrounded by weak field ligands can be:

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$\sqrt { 15 }\ \mathrm { BM }$
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$\sqrt { 8 }\ \mathrm { BM }$
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(a) $\&$ (b) both
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None of these

What type of bond is

$L \rightarrow M$ in complex compounds?

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Ionic
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Metallic
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Co-ordinate covalent
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Covalent

${ K }_{ 4 }\left[ { Fe\left( CN \right) }_{ 6 } \right] ,$ the E.AN. of

$Fe$ is:

0%
33
0%
35
0%
36
0%
26

What type of hybridization is possible in square planar molecules?

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$sp^3$
0%
$dsp^2$
0%
$sp^3d$
0%
$dsp^3$

Alfred warner prepared many new compound by mixture of _______ and ammonia.

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Iron chloride
0%
Cobalt chloride
0%
Maganese chloride
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Chromium chloride

The number of possible isomers for disubstituted borazine

$B_{3}N_{3}H_{4}X_{2}$ is

0%
3
0%
4
0%
6
0%
2

Which of the following is true about metal-EDTA complex (if it is a

$3 d$ metal)?

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The ratio of moles of metal $\&$ EDTA in complex is $1:6$ .
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The ratio of moles of metal $\&$ EDTA in complex is $6 : 1$ .
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The ratio of moles of metal $\&$ EDTA in complex is $1 : 1$ .
0%
3 ${ d }$ metal ion cannot bonded with EDTA.

The Effective atomic number of Cr in

$Cr(CO)_{6}$ is

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36
0%
38
0%
28
0%
54

The oxidation state of Cr in

$Cr(CO)_{ 6 }$ is:

0%
0
0%
+2
0%
-2
0%
+6

The oxidation state of nickel in

$[Ni(CO)_4]$ is:

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4
0%
0
0%
2
0%
3

What is the primary and secondary valence of chromium ion complex compound dichloride oxaletochromium (II)

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2, 4
0%
4, 3
0%
3, 6
0%
6, 3

The value of 'x' in complex

${ H }_{ x }\left[ Co\left( { Co } \right) _{ 4 } \right] ,\left[ Fe\left( Co \right) _{ x }\left( \pi -{ C }_{ 5 }{ H }_{ 5 } \right) \right] ^{ + }$ are respectively

0%
$1,1$
0%
$2,3$
0%
$3,1$
0%
$1,3$

The charge on cobalt in

${ [Co{ (CN) }_{ 6 }] }^{ -3 }$ is:

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+ 6
0%
+ 3
0%
+ 2
0%
+ 1

The crystal field splitting for

${ Cr }^{ 3+ }$ ion in octahedral field changes for following ligands in decreasing order as:-

0%
${ I }^{ - }<{ H }_{ 2 }O<{ NH }_{ 3 }<{ CN }^{ - }$
0%
$CN^{ - }{ >I }^{ - }>{ H }_{ 2 }O{ >NH }_{ 3 }$
0%
$CN^{ - }>EDT{ A }^{ -4 }>{ S }^{ -2 }>{ Cl }^{ - }$
0%
$CO>{ CN }^{ - }>{ I }^{ - }$

Which of the following does not show optical activity?

0%
$\left[ CO\left( { NH }_{ 3 } \right) _{ 4 }{ Cl }_{ 2 } \right]$
0%
$\left[ Cr\left( ox \right) _{ 3 } \right] ^{ 3- }$
0%
$\left[ CO\left( ox \right) _{ 2 }\left( { NH }_{ 3 } \right) _{ 2 } \right] Cl$
0%
$\left[ CO\left( en \right) \left( { NH }_{ 3 } \right) _{ 2 }\left( { H }_{ 2 }O \right) _{ 2 } \right] { Cl }_{ 2 }$

Aqueous solution of which species shows highest molar conductivity?

0%
$K_3[Co(C_2O_4)_3]$
0%
$[Pt(H_2O)_6]Br_4$
0%
$[Co(NH_3)_5(CO_3)]Cl$
0%
$[Pt(NH_3)_2Cl(NO_2)]$

Which Of the following statements is incorrect ?

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In $\mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right]$ the ligand has satisfied only the secondary valency of ferric ion.
0%
In $\mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { \mathrm { 6 } } \right]$ the ligand has satisfied both primary and secondary valencies of ferric ion.
0%
In $\mathrm { K } _ { 4 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { \mathrm { 6 } } \right]$ the ligand has satisfied both primary and secondary valencies of ferrous ion.
0%
In $\left[ C u \left( N H _ { 3 } \right)_4 ] S O _ { 4 }\right.$ the ligand has satisfied only the secondary valency of copper.

Which of the following will give maximum number of isomers?

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$\left[ Co\left( { NH }_{ 3 } \right) _{ 4 } \right] { Cl }_{ 2 }$
0%
$\left[ Ni\left( { NH }_{ 3 } \right) _{ 4 }\left( en \right) \right] ^{ 2+ }$
0%
$\left[ Ni\left( en \right) _{ 2 }\left( { C }_{ 2 }{ O }_{ 4 } \right) \right] ^{ 2- }$
0%
$\left[ Cr\left( { NH }_{ 3 } \right) _{ 4 }\left( SCN \right) _{ 2 } \right] ^{ + }$

In which of the following pairs , the hybridisation of central atmos is same but molecular geometry is not the same ?

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${ SO }_{ 3 },{ CO }_{ 3 }^{ 2- }$
0%
${ SO }_{ 3 }^{ 2- },{ NH }_{ 3 }$
0%
${ PCl }_{ 5 },{ POCl }_{ 3 }$
0%
${ XeF }_{ 2 },{ ICl }_{ 3 }$

The oxidation number of Ni in

$Na_{ 2 }[Ni(EDTA)]$ is

0%
+4
0%
+6
0%
+2
0%
0

The number of ions formed when

$[Cu(NH_3)_4] SO_4$ is dissolved in water is:

0%
1
0%
2
0%
4
0%
zero

The coordination number and oxidation state of metal M in complex

$[M(NH_3)_3 Cl_2SO_4 ]$ respectively are:

0%
6 and +3
0%
5 and +2
0%
6 and +4
0%
5 and +3

$[Co(H_2O)_5NO_2](NO_3)_2$ can not show

0%
linkage isomerism
0%
hydrate isomerism
0%
ionization isomerism
0%
optical isomerism

What is the valency of Fe which does not ionize in

${ K }_{ 3 }[Fe({ OX }_{ 3 })]$ ?

0%
Three
0%
Four
0%
Six
0%
One

According to postulates of Werner theory for an ordination compounds.

0%
Primary valency is ionizable
0%
Secondary valency is ionizable
0%
Primary and secondary valencies are non-ionizable
0%
Only primary valency is non-ionizable

CBSE Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 12 - MCQExams.com

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Practice Class 12 Engineering Chemistry Quiz Questions and Answers

CBSE Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 12 - MCQExams.com

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Practice Class 12 Engineering Chemistry Quiz Questions and Answers

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