Processing math: 55%

CBSE Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 4 - MCQExams.com

What is the electronic configuration of elements of III rd group
  • 1s2,2s22ps3
  • 1s2,2s22p6,3s23p1
  • 1s2,2s22p6
  • 1s2,2s22p6,3s1
The compounds [Co(SO4)(NH3)5]Br and [Co(SO4)(NH3)5]Cl represents:
  • linkage isomerism
  • ionisation isomerism
  • coordination isomerism
  • no isomerism
TEL is a compound used as
  • antibiotic
  • antiseptic
  • antiknocking
  • None of these
The solubilities of carbonates decrease down the magnesium group due to decrease in
  • lattice energies of solids
  • hydration energies of carbon
  • inter ionic attraction
  • entropy of solution formation
Which of the following statements are correct?
I) CO forms a complex with CuCl in con.HCl
II) Ni forms a volatile carbonyl compound with CO
III) CO act as a lewis acid
(IV) CO oxidizes Cu to CuO
  • I and III
  • I and II
  • III and IV
  • I and IV
2.33g of compound X(empirical formula CoH12N4Cl3) upon treatment with excess AgNO3 solution produces 1.435g of a white precipitate. The primary and secondary valences of cobalt in compound X, respectively, are.
[Given : Atomic mass: Co=59,Cl=35.5,Ag=108].
  • 3,6
  • 3,4
  • 2,4
  • 4,3
Which can exist both as diastereoisomer and enantiomer?
  • [Pt(en)3]4+
  • [Pt(en)2ClBr]2+
  • [Ru(NH3)4Cl2]0
  • [PtCl2Br2]0
Barium ions, CN and Co2+ form an ionic complex. If that complex is supposed to be 75% ionised in water with vant Hoff factor 'i' equal to four, then the coordination number of Co2+ in the complex can be.
  • Six
  • Five
  • Four
  • Six and Four both
When one mole of each of the following complex is treated with an excess of AgNO3.which will give maximum amount of AgCl?
  • [Co(NH3)6]Cl3
  • [Co(NH3)5Cl]Cl2
  • [Co(NH3)Cl2]Cl
  • [Co(NH3)3Cl3]
Hexa ammine nickel (II) hexa nitro cobaltate (III) can be written as:
  • [Ni(NH3)6Co(NO2)6]
  • [Ni(NH3)6]3[Co(NO2)6]2
  • [Ni(NH3)6][Co(NO2)6]2
  • [Ni(NH3)6(NO2)6]Co
Total no. of possible isomers for complex compound [Cu(NH3)4][PtCl4] are:
  • 3
  • 2
  • 4
  • none of these
Indicate the incorrect statement:
  • Number of hybrid orbitals formed is equal to no. of atomic involved
  • 2px and 2py orbitals of carbon can be hybridized to yield two new more stable orbitals
  • Effective hybridisation is not possible with orbitals of widely different energies
  • The concept of hybridization has a greater significance in the VB theory of localised orbitals than MO theory.
A violet colour compound is formed in detection of S in a compound:
  • Na4[Fe(CN)5NOS]
  • Na3[Fe(CN)5NOS]
  • Na2[Fe(CN)5NOS]
  • Na[Fe(CN)5NOS]
Which of the following complex has five unpaired electrons?
  • [Mn(H2O)6]2+
  • [Mn(CN)6]3
  • [CrCl3(H2O3]
  • [Ag(NH3)2]+
In which of the following pair of complexes, the experimental magnetic moment and the geometric shapes same?
  • K[MnO4] and K2[NiCl4]
  • K2[Ni(CN)4] and K4[Ni(CN)4]
  • K2[Ni(CN)4] and K2[Ni(NH3)2Cl2]
  • K3[Fe(CN)6] and K4[Fe(CN)6]
Which of the following will give maximum number of isomer?
  • [Co(py)3(NH3)3]3+
  • [Ni(en)(NH3)4]2+
  • [Fe(C2O4)(en)2]2
  • [Co(NO2)2(NH3)4]+
Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers:
  • K[Cr(H2O)2(C2O4)2]
  • [Co(en)3]Cl3
  • [Co(NH3)5(NO2)](NO3)2
  • [Pt(NH3)(H2O)Cl2]
Which of the following pairs of complexes whose aqueous solutions gives pale yellow and white precipitates respectively with 0.1M AgNO3?
  • [Pt(NH3)4Br2]Cl2 and [Pt(NH3)4Cl2]Br2
  • [Co(NH3)5NO3]Br and [Co(NH3)5Br]NO3
  • [Pt(NH3)4Cl2]Br2 and [Pt(NH3)4Br2]Cl2
  • [Co(NH3)5NO3]Cl and [Co(NH3)5Cl]NO3
A six coordinate complex of formula CrCl3.6H2O has green colour. A 0.1 M solution of the complex when treated with excess of AgNO3 gave 28.7 g of white precipitate. The formula of the complex would be___________.
  • [Cr(H2O)6]Cl3
  • [Cr(H2O)5Cl]Cl2.H2O
  • [Cr(H2O)4Cl]Cl2.2H2O
  • [Cr(H2O)3Cl3].3H2O
Which of the following complexes exists in facial and meridional forms? 
  • K[Cr(H2O)2(C2O4)2]
  • [Co(NH)3(NO2)3]
  • [Co(NH3)5(NO2)](NO3)2
  • [Pt(NH3)(H2O)Cl2]
The halogen form compound among themselves with the formula AA,AA3,AA5 and AA7 where A is the heavier halogen. Which of the following pairs representing their structure and being polar and non-polar are correct ?
(A) AA linear, polar
(B) AA3 T Shaped, polar
(C) AA5 square pyramidal, polar
(D) AA7 pentagonal bipyramidal, non-polar
  • (A) and (C) are correct
  • (A), (B) And (C) are correct
  • (B), (C) and (D) are correct
  • (A), (B), (C) and (D) are correct
Which of the following compounds would exhibit co-ordination isomerism?
  • [Cr(H2O)5]Cl2
  • [Cr(NH3)5][Co(CN)5]
  • [Cr(en)2]NO2
  • [Ni(NH3)5][BF4]3
Several octahedral complexes are possible from combinations of Co3+,Cl and NH3. Primary valence do not have chloride ion. The correct statement(s) regarding the octahedral coordination entities having the formula .[Co(NH3)nCl6n](n3)+ with n3, is/ are_____________.
  • At most six octahedral complexes are possible
  • One of the complexes is homoleptic
  • All the complexes are paramagnetic
  • Some of the complexes dissociate in water to give Co3+ and Cl ions
Which among the following forms octahedral complex?
  • d4 (low spin)
  • d8 (high spin)
  • d6 (low spin)
  • All of these
What is the oxidation number of gold in the complex [AuCl4]1?
  • +4
  • +3
  • +2
  • +1
Compound [Co{(CN)}_{2}{(en)}_{2}]Cl can show:
  • only optical isomerism
  • only geometrical and optical isomerism
  • only structural isomerism
  • structural, geometrical and optical isomerism
Which of the following statements is true about hybridisation?
  • The hybridised orbitals have different energies for each orbital.
  • The number of hybrid orbitals is equal to the number of atomic orbitals that are hybridised.
  • Hybrid orbitals form multiple bonds.
  • The orbitals with different energies undergo hybridisation.
If the value of C.F.S.E. for "Ni" is \Delta_0 then it is for Pd should  be ?
  • 1.1\, \Delta_0
  • 0.5\, \Delta_0
  • 1.5\, \Delta_0
  • none of the above
Which one of the following complexes has largest value of \Delta_{0}?
  • [Cr(H_{2}O)_{6}]^{+2}
  • [Cr(H_{2}O)_{6}]^{+3}
  • [Mn(H_{2}O)_{6}]^{+2}
  • [Mn(H_{2}O)_{6}]^{+3}
According to Werner's theory of coordination compounds:
  • primary valency is ionisable
  • secondary valency is ionisable
  • primary and secondary valencies are ionisable
  • neither primary nor secondary valency is ionisable
Three arrangements are shown for the complex, [Co(en)(NH_3)_2Br_2]^+. Which one is the wrong statement?
935282_b4c8690b169146a197942524baf910f2.PNG
  • I and II are geometrical isomers.
  • II and III are optical isomers.
  • I and III are optical isomers.
  • II and III are geometrical isomers.
Copper sulphate dissolves in ammonia due to the formation of:
  • Cu_2O
  • [Cu(NH_3)_4]SO_4
  • [Cu(NH_3)_4]OH
  • [Cu(H_2O)_4]SO_4
The correct labeling of different terms used in coordination compounds is:

935810_75d73e1f3e9542e18fb318895b59311f.png
  • (i) Central atom, (ii) Ionisation sphere, (iii) Coordination number, (iv) Ligands
  • (i) Ligands, (ii) Coordination number, (iii) Valency, (iv) Ionisation sphere
  • (i) Ionisation sphere, (ii) Ligands, (iii) Coordination number, (iv) Central atom
  • (i) Ligands, (ii) Ionisation sphere, (iii) Coordination number, (iv) Central atom
Among the following complexes (K-P) :
K_3[Fe(CN_6]-K  and   [Co(NH_3)_6]Cl_3-L
Na_3[Co(oxalate)_3]-M and      [Ni(H_2O)_6]Cl_2-N ;
K_2[Pt(CN)_4]-O and [Zn(H_2O)_6](NO_3)_2 - P;
the diamagnetic complexes are:
  • K,L,M,N
  • K,M,O,P
  • L,M,O,P
  • all 
Which one of the following has largest number of isomers?
(R = alkyl group,en = ethylenediamine)
  • [Ru(NH_3)_4Cl_2]^+
  • [Co(NH_3)_5Cl]^{2+}
  • [Ir(PR_3)_2H(CO)]^{2+}
  • [Co(en)_2Cl_2]^+
Both geometrical and optical isomerism are shown by:
  • [Co(en)_2Cl_2]^+
  • [Co(NH_3)_5Cl]^{2+}
  • [Co(NH_3)_4Cl_2]^{+}
  • [Cr(ox)_3]^{3-}
According to Werner's coordination theory, there are _______ kinds of valency, _______ and ______. The primary valency of a central metal ion is satisfied with ________.
  • three, negative, positive, cations
  • different, negative, positive, anions
  • two, primary, secondary, anions
  • two, saturated, unsaturated, cations
The compounds [Co(SO_4) (NH_3)_5]Br and  [Co(SO_4)(NH_3)_5]Cl represent:
  • linkage isomerism
  • ionisation isomerism
  • coordination isomerism
  • no isomerism
Which of the following shows maximum number of isomers?
  • [Co(NH_3)_4Cl_2]
  • [Ni(en)(NH_3)_4]^{2+}
  • [Ni(C_2O_4)(en)_2]^{2-}
  • [Cr(SCN)_2(NH_3)_4]^+
Which of the following sets of examples and geometry of the compounds is not correct?
  • Octahedral - [Co(NH_3)_6]^{3+}, [Fe(CN)_6]^{3-}
  • Square planar - [Ni(CN)_4]^{2-}, [Cu(NH_3)_4]^{2+}
  • Tetrahedral- [Ni(CO)_4], [ZnCl_4]^{2-}
  • Trigonal bipyramidal - [Fe(NH_3)_6]^{2+}, [CuCl_4]^{2-}
Which of the following pairs of isomers is not correctly matched with its type of isomerism?
  • [Cr(NH_3)_6][Cr(CN)_6] and [Cr(NH_3)_4(CN)_2][Cr(NH_3)_2(CN)_4] - Coordination isomerism
  • Co[(NH_3)_5NO_2]Cl_2 and [Co(NH_3)_5ONO]Cl_2- Linkage isomerism
  • [Co(py)_2(H_2O)_2Cl_2]Cl and [Co(py)_2(H_2O)Cl_3]H_2O -Coordination isomerism
  • [Pt(NH_3)_4Br_2]Cl_2 and [Pt(NH_3)_4Cl_2]Br_2 -Ionisation isomerism
Match the column I with column II and mark the appropriate choice.
Column I
(Complex)
Column II
(Isomerism)
(A)[Co(NH_3)_6] [Cr(CN)_6](i)Geometrical isomerism
(B)[Co(en)_2(NO_2)Cl]Br(ii)
Optical isomerism
(C)[Pt(en)_2Cl_2](iii)Coordination isomerism
(D)[Cr(CN)_2(NH_3)_4]^{2+}(iv)Linkage isomerism
  • A - (iv), B - (ii), C - (iii), D - (i)
  • A - (ii), B - (iii), C - (i), D - (iv)
  • A - (iii), B - (iv), C - (ii), D - (i)
  • A - (i), B - (iii), C - (iv), D - (ii)
Two isomers of a compound [Co(NH_3)_3Cl_3] (MA_3B_3\, type) are shown in the figures. The isomers can be classified as:
935888_45f36b8ce3c742289cf1cbc51da06006.png
  • (i) fac-isomers (ii) mer-isomer
  • (i) optical-isomer (ii) trans-isomer
  • (i) mer-isomer (ii) fac-isomer
  • (i) trans-isomer (ii) cis-isomer.
Which of the following complexes exists as pair of enantiomers?
  • [Co(NH_3)_4Cl_2]^+
  • [Cr(en)_3]^{3+}
  • [Co(P(C_2H_5)_3)_2ClBr]
  • trans- [Co(en)_2Cl_2]^+
CuSO_4\cdot 5H_2O is blue is colour while CuSO_4 is colourless due to:
  • presence of strong field ligand in CuSO_4\cdot 5H_2O
  • due to absence of water (ligand), d - d transitions are not possible in CuSO_4
  • anhydrous undergoes d - d transitions due to crystal field splitting
  • colour is lost due to unpaired electrons.
The correct energy level diagram for [Co(CN)_6]^{3-}
The hybridisation involved in [Co(C_2O_4)_3]^{3-} is ?
  • sp^3d^2
  • sp^3d^3
  • dsp^3
  • d^2sp^3
[Pt(NH_3)_4][CuCl_4] and [Cu(NH_3)_4][PtCl_4] are known as:
  • ionisation isomers
  • coordination isomers
  • linkage isomers
  • polymerisation isomers.
Energy profile diagram for an exothermic reaction, A\xrightarrow { 1 } B\xrightarrow { 2 } C\xrightarrow { 3 } D, is given below.

The rate determining step of the reaction is :
989677_85ffe0975a054ade9c9fb1c109a5839b.png
  • A\longrightarrow B
  • B\longrightarrow C
  • C\longrightarrow D
  • can not preditc
The synthetic steroid ethynylestardiol (1) is a compound used in the birth control pill. How many sp^3 hybridised carbon atoms are present in compound (1) ?
988743_077c0214a56e4a56a832b7c52ae8497a.png
  • 8
  • 9
  • 10
  • 11
  • 12
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 12 Engineering Chemistry Quiz Questions and Answers