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CBSE Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 5 - MCQExams.com

The synthetic steroid ethynylestardiol (1) is a compuond used in the birth control pill. How many sp2 hybridised carbon atoms are present in compound (1)?
988744_1f2960449d31448e9535852aa8268062.png
  • 4
  • 5
  • 6
  • 7
  • 8
The primary and secondary valency of a central metal ion in [Co(NH3)4CO3]Cl complex is _________ and _________ respectively.
  • 2,6
  • 4,6
  • 4,5
  • 3,6
By which of the following, poisoning of lead in the body can be removed?
  • Pt
  • EDTA
  • Ox2
  • Pn
Which of following is the incorrect match?
  • Insulin - Zinc
  • Haemoglobin - Iron
  • Vitamin B12 - Cobalt
  • Chlorophyll - Chromium
Order of the bond strength of CH bonds involving sp, sp2 and sp3 hybridized carbon atoms is:
  • sp>sp2>sp3
  • sp3>sp2>sp
  • sp2>sp3>sp
  • sp2>sp>sp3
The synthetic steroid ethynylestardiol (1) is a compuond used in the birth control pill.
How many sp hybridised carbon atoms are present in compound (1) ?
988745_f9ce424e3c7e45c98d3b5510df37cf8d.png
  • 2
  • 4
  • 6
  • 8
  • 10
Which of the following will exhibit more than ten isomers?
  • [Co(en)Cl BrI(CN)]
  • [Co(gly)Cl BrI(NC)]
  • [Co(gly)Cl Br(CN)NO2]
  • All the above
Which of the following does not show optical isomerism?
  • [Co(NH3)3Cl3]
  • [Co(en)Cl2(NH3)2]+
  • [Co(en)3]3+
  • [Co(en)2Cl2]+
The value for crystal field stabilisation energy is zero for:
  • K2(MnF6]
  • K3[Fe(CN)6]
  • K3[FeF6]
  • K4[Fe(CN)6]
Which of the following order is correct for the IR vibrational frequency of CO?
  • [Fe(CO)4]2<[Co(CO)4]<[Ni(CO)4]
  • [Fe(CO)4]2>[Co(CO)4]>[Ni(CO)4]
  • [Fe(CO)4]2>[Co(CO)4]<[Ni(CO)4]
  • [Fe(CO)4]2<[Co(CO)4]>[Ni(CO)4]
The correct representation of CuSO45H2O is:
  • [Cu(H2O)5]SO4
  • [Cu(H2O)3SO4]2H2O
  • [CuSO4H2O]4H2O
  • [Cu(H2O)4]SO4H2O
Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy ?
  • SrSO4
  • MgSO4
  • CaSO4
  • None of these
The value of X in   Fe(CO)2(NO)x, is:
  • 3
  • 4
  • 2
  • 1
NiCl+2KCNexcessComplex(A)
NiCl+2KClexcessComplex(B)
The coordination number of nickel in both complexes (A) and (B) is 4.
The IUPAC name of the complex (A) and (B) are:
  • Potassium tetracyanonicklate (II) and Potassium tetrachloronicklate (II)
  • Potassium tetracyanonickel (II) and Potassium tetrachloronickel (II)
  • Potassium cyanonicklate (II) and Potassium chloronicklate (II)
  • Potassium cyanonickel (II) and Potassium Chloronickel (II)
Which of the following compounds is most stable ?
  • LiCl
  • LiI
  • LiBr
  • LiF
Green house effect is caused by
  • NO2
  • CO2
  • NO
  • All are correct
Which of the following can show coordination isomerism ?
  • [Cu(NH3)4][PtCl4]
  • [Fe(NH3)6]2[Pt(CN)6]3
  • Both A and B
  • [Pt[en]3][SO4]2
Consider the reaction.
[Ni(H2O)6]2+(aq)+3en(aq)[Ni(en)3]2++2H2O
Which of the following property of compound is changed in reaction?
  • Co-ordination number
  • Geometry of complex
  • Hybridization of central atom
  • Wavelength of absorbed light
If the thio-cyanide ion is added to potash-ferric alum then red colour appears. This colour is due to the formation of:
  • KSCN
  • Fe(SCN)3
  • Fe(SCN)2
  • Fe(SCN)
Number of stereoisomer's possible for coordination complex Na[Cr(en)Cl2Br2] is:
  • 2
  • 3
  • 4
  • 5
The co-ordination number of a metal in co-ordination compound is:
  • same as primary valency
  • sum of primary and secondary valences
  • same as secondary valency
  • none of the above
An ion M2+, forms the complexes [M(H2O)6]2+,[M(en)3]2+ and [MBr6]4. The colour of the complexes will be _____________ respectively.
  • green, blue and red
  • blue, red and green
  • green, red and blue
  • red, blue and green
The coordination number and oxidation number of the central metal ion in the complex [Pt(en)2]+2 is:
  • C.N. =2, O.N. =+2
  • C.N. =6, O.N. =+4
  • C.N. =4, O.N. =+4
  • C.N. =4, O.N. =+2
How many of the following metals when heated in an atmosphere of N2 gas form nitrides?

Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba
  • 9
  • 5
  • 3
  • 6
FeCl4H2O is actually:
  • [Fe(H2O)4]Cl3
  • [Fe(H2O)3Cl]Cl2.H2O
  • [Fe(H2O)4Cl2]Cl
  • [Fe(H2O)3Cl2]Cl.H2O
Which of the following is correct IUPAC name for coordination isomer of [Pt(NH3)4][Pd(C2O4)2]?
  • Diammine (oxalato) platinum (II) diammine (oxalato) paladate (II)
  • Diammine (oxalato) platinum (II) diammine (oxalato) paladium (II)
  • Tetraammineplatinum (IV) bis(oxalato) paladate (II)
  • Tetraammineplatinum (IV) bis(oxalato) paladium (II)
Primary and secondary valency of Pt in [Pt(en)2Cl2]Cl2 are:
  • 4, 4
  • 4, 6
  • 6, 6
  • 4, 2
Which of the following complex ion is expected to absorb light in the visible region?
  • [Ti(en)3]4+
  • [Sc(NH3)4(H2O)2]3+
  • [CrO4]2
  • [Zn(CN)2]2
In the compound CoCl3.5NH3:
  • all the Cl show primary valency only
  • Two Cl show primary valency and one Cl shows secondary valency
  • Two Cl show primary valency and one Cl shows primary valency as well as secondary valency
  • All the Cl show secondary valency
Which of the following will given maximum number of isomers?
  • [Co(NH3)4Cl2]+
  • [Ni(en)(NH3)4]2+
  • [Cr(SCN)2(NH3)+4]
  • [Ni(C2O4)(en)2]2+
1 mole of co-ordinate compound CoCl3 on reaction with excess AgNCl 143.5gms of AgCl ppt . Then number of chloride ions satisfying both primary valency and secondary valency are?
  • 2
  • 3
  • 1
  • 0
If a complex [M(H2O)6]2+ absorbs energy corresponding to λ nm, then the wavelength (in nm) absorbed by tetrahedral, complex [m(H2O)4]2+ will be:
  • 49λ
  • 59λ
  • 94λ
  • 1λ
Which of the following represents the given mode of hybridization sp2sp2spsp from left to right?
  • CH2=CHCN
  • CH2=C=C=CH2
  • CH2=CHCH=CH2
  • CH2=C=CHCH3
Predict the order of Δ0 for the following compounds.
I. [Mn(H2O)6]2+
II. [Mn(CN)2(H2O)4]
III. [Mn(CN)4(H2O)2]2
  • Δ0(I)<Δ0(II)<Δ0(III)
  • Δ0(II)<Δ0(I)<Δ0(III)
  • Δ0(III)<Δ0(I)<Δ0(I)
  • Δ0(I)<Δ0(III)<Δ0(II)
The CFSE of [Mn(H2O)6]2+ is:
  • -1.2 ΔΘ
  • -1.9 ΔΘ
  • 0
  • -2.4 ΔΘ
The formula of the complex, tris- (ethylenediamine) cobalt (iii) sulphate is:
  • [Co(en)2SO4]
  • [Co(en)3SO4]
  • [Co(en)3]2(SO4)3
  • [Co(en)3]2SO4
The pair(s) of coordination complex/ion exhibiting the same kind of isomerism is (are)?
  • [Cr(NH_3)_5Cl]Cl_2\  and\  [Cr(NH_3 )_4Cl_2]Cl
  • [Co(NH_3)_4Cl_2]^+ and\  [Pt(NH_3)_2(H_2O)Cl]^+
  • [CoBr_2Cl_2]^{2-} and\  [PtBr_2Cl_2]^{2-}
  • [Pt(NH_3)_3(NO_3)]Cl\  and\  [Pt(NH_3 )_3Cl]Br
The number of isomers possible for square planar complex K_{2}[PdClBr_{2}SCN] is:
  • 2
  • 3
  • 4
  • 6
The strongest -CO bond is present in:
  • [Cr(CO)_{6}]^{+}
  • [Fe(CO)_{5}]
  • [V(CO)_{6}]^{-}
  • all have equal strength
Which of the following complexes has a geometry different from others?
  • \left [ NiCl_{4} \right ]^{2-}
  • Ni\left ( CO \right )_{4}
  • \left [ Ni\left ( CN \right )_{4} \right ]^{^{-2}}
  • \left [ Zn\left ( NH_{3} \right )_{4} \right ]^{2+}
The number of isomers represented by the M.F {C}_{2}{D}_{2}(Cl)(Br) is:
  • 2
  • 3
  • 5
  • none of these
Type of isomerism shown by \left [ Cr(NH_{3})_{5}NO_{2} \right ]Cl_{2} is
  • Optical
  • ionisation
  • geometrical
  • linkage
The sum of coordination number and oxidetion number of the metal M in the complex \left [ M\left ( en \right )_{2}\left ( C_{2}O_{4} \right ) \right ] Cl (where en is ethylenediamine) is:
  • 6
  • 7
  • 8
Which of the following are not true about hexagonal close packing?
  • It has a coordination number of 6
  • It has 26% empty space
  • It is ABCABC...... type of arrangement
  • It is as closely packed as body centred cubic packing
Which of the following molecules are formed by p-p over lapping?
  • Cl_2
  • HCl
  • H_2O
  • NH_3
In aqueous solution 1 mole of CoCl_3.4NH_3 gives 1 mole of AgCl precipitate with excess AgNO_3, then what is the secondary valency of metal?
  • 3
  • 4
  • 5
  • 6
A six-coordinate complex of formula CrCl_3.  6H_2O has a green colour. A 0.1 M solution of the complex, when treated with excess AgNO_3, gave 28.7 g of white precipitate. The formula of the complex would be:
  • [Cr(H_2O)_6]Cl_3
  • [Cr(H_2O)_5Cl]Cl_2.H_2O
  • Both A & B
  • None of these
With a change in hybridization of the carbon bearing the charge, the stability of a carbanion decreases in the order
  • sp < { sp }^{ 2 } < { sp }^{ 3 }
  • sp < { sp }^{ 3 } < { sp }^{ 2 }
  • { sp }^{ 3 } < { sp }^{ 2 } < sp
  • { sp }^{ 2 } < sp < { sp }^{ 3 }
The complex ion\left[ Fe({ CN) }_{ 6 } \right] ^{ 4- } contains :
  • { sp }^{ 3 }{ d }^{ 2 } hybrid orbitals with octahedral structure
  • total 104 electrons on { Fe }^{ +2 }
  • six sigma Bonds
  • total of 36 electrons on { Fe }^{ 2+ } ions.
According to Werner's theory the primary valency and secondary valency in complex [Co(NH_3)_4Cl_2]Cl is respectively:
  • 3,3
  • 3, 6
  • 6, 3
  • 4, 2
0:0:1


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