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 $$sp^2$$ 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 $$[Co(NH_3)_4CO_3]$$$$Cl$$ 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
  • $$Ox^{2-}$$
  • $$Pn$$
Which of following is the incorrect match?
  • Insulin - Zinc
  • Haemoglobin - Iron
  • Vitamin $$B_{12}$$ - Cobalt
  • Chlorophyll - Chromium
Order of the bond strength of $$C-H$$ bonds involving sp, $$sp^2$$ and $$sp^3$$ hybridized carbon atoms is:
  • $$sp \, > \, sp^2 \, > \, sp^3$$
  • $$sp^3 \, > \, sp^2 \, > \, sp$$
  • $$sp^2 \, > \, sp^3 \, > \, sp$$
  • $$sp^2 \, > \, sp \, > \, sp^3$$
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?
  • $$\left[ Co\left( en \right) Cl\ BrI\left( CN \right) \right]$$
  • $$\left[ Co\left( gly \right) Cl\ BrI\left( NC \right)\right]$$
  • $$\left[ Co\left( gly \right) Cl\ Br\left( CN \right)NO_2 \right]$$
  • All the above
Which of the following does not show optical isomerism?
  • $$[Co(NH_3)_3Cl_3]$$
  • $$[Co(en)Cl_2(NH_3)_2]^+$$
  • $$[Co(en)_3]^{3+}$$
  • $$[Co(en)_2Cl_2]^+$$
The value for crystal field stabilisation energy is zero for:
  • $$K_2(MnF_6]$$
  • $$K_3[Fe(CN)_6]$$
  • $$K_3[FeF_6]$$
  • $$K_4[Fe(CN)_6]$$
Which of the following order is correct for the IR vibrational frequency of CO?
  • $${ \left[ Fe{ \left( CO \right) }_{ 4 } \right] }^{ 2- }<\left[ Co{ \left( CO \right) }_{ 4 } \right]^- <\left[ Ni{ \left( CO \right) }_{ 4 } \right] $$
  • $${ \left[ Fe{ \left( CO \right) }_{ 4 } \right] }^{ 2- }>\left[ Co{ \left( CO \right) }_{ 4 } \right]^- >\left[ Ni{ \left( CO \right) }_{ 4 } \right] $$
  • $${ \left[ Fe{ \left( CO \right) }_{ 4 } \right] }^{ 2- }>\left[ Co{ \left( CO \right) }_{ 4 } \right]^- <\left[ Ni{ \left( CO \right) }_{ 4 } \right] $$
  • $${ \left[ Fe{ \left( CO \right) }_{ 4 } \right] }^{ 2- }<\left[ Co{ \left( CO \right) }_{ 4 } \right]^- >\left[ Ni{ \left( CO \right) }_{ 4 } \right] $$
The correct representation of $$CuSO_4\cdot 5H_2O$$ is:
  • $$[Cu(H_2O)_5]SO_4$$
  • $$[Cu(H_2O)_3SO_4]\cdot 2H_2O$$
  • $$[CuSO_4\cdot H_2O]\cdot 4H_2O$$
  • $$[Cu(H_2O)_4]SO_4\cdot H_2O$$
Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy ?
  • $$SrSO_4$$
  • $$MgSO_4$$
  • $$CaSO_4$$
  • None of these
The value of X in   $$Fe{ \left( CO \right)  }_{ 2 }\left( NO \right) x,$$ is:
  • 3
  • 4
  • 2
  • 1
$$NiCl^+_2\overset{KCN}{\underset{excess}{\rightarrow}}Complex(A)$$
$$NiCl^+_2\overset{KCl}{\underset{excess}{\rightarrow}}Complex (B)$$
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
  • $$NO_2$$
  • $$CO_2$$
  • $$NO$$
  • All are correct
Which of the following can show coordination isomerism ?
  • $$[Cu(NH_3)_4][PtCl_4]$$
  • $$[Fe(NH_3)_6]^{-2}[Pt(CN)_6]^{-3}$$
  • Both A and B
  • $$[Pt[en]_3] [SO_4]_2$$
Consider the reaction.
$$[Ni(H_2O)_6]^{2+}(aq)+3en(aq) \to [Ni(en)_3]^{2+}+2H_2O$$
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 $$Na[Cr(en)Cl_2Br_2]$$ 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 $${ M }^{ 2+ }$$, forms the complexes $${ \left[ M{ \left( { H }_{ 2 }O \right)  }_{ 6 } \right]  }^{ 2+ },{ \left[ M{ \left( en \right)  }_{ 3 } \right]  }^{ 2+ }$$ and $${ \left[ { MBr }_{ 6 } \right]  }^{ 4- }$$. 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 $$N_2$$ gas form nitrides?

Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba
  • 9
  • 5
  • 3
  • 6
$$FeCl_4H_2O$$ is actually:
  • $$[Fe(H_2O)_4]Cl_3$$
  • $$[Fe(H_2O)_3Cl]Cl_2.H_2O$$
  • $$[Fe(H_2O)_4Cl_2]Cl$$
  • $$[Fe(H_2O)_3Cl_2]Cl.H_2O$$
Which of the following is $$correct\ IUPAC$$ name for coordination isomer of $$[Pt(NH_{3})_{4}][Pd(C_{2}O_{4})_{2}]$$?
  • 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 $$Pt\ in\ \left[ Pt{ \left( en \right)  }_{ 2 }{ Cl }_{ 2 } \right] { Cl}_{ 2 }$$ are:
  • 4, 4
  • 4, 6
  • 6, 6
  • 4, 2
Which of the following complex ion is expected to absorb light in the visible region?
  • $$[Ti(en)_{3}]^{4+}$$
  • $$[Sc(NH_{3})_{4}(H_{2}O)_{2}]^{3+}$$
  • $$[CrO_{4}]^{2-}$$
  • $$[Zn(CN)_{2}]^{2-}$$
In the compound $$CoCl_{3}.5NH_{3}$$:
  • 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?
  • $$[Co(NH_3)_4 Cl_2]^+$$
  • $$[Ni(en)(NH_3)_4]^{2+}$$
  • $$[Cr(SCN)_2(NH_3)^+_4]$$
  • $$[Ni(C_2O_4)(en)_2]^{2+}$$
1 mole of co-ordinate compound $$CoCl_3$$ on reaction with excess AgNCl $$143.5$$gms of AgCl ppt . Then number of chloride ions satisfying both primary valency and secondary valency are?
  • $$2$$
  • $$3$$
  • $$1$$
  • $$0$$
If a complex $$[M(H_2O)_6]^{2+}$$ absorbs energy corresponding to $$\lambda$$ nm, then the wavelength (in nm) absorbed by tetrahedral, complex $$[m(H_2O)_4]^{2+}$$ will be:
  • $$\frac{4}{9}\lambda$$
  • $$\frac{5}{9}\lambda$$
  • $$\frac{9}{4}\lambda$$
  • $$\frac{1}{\lambda}$$
Which of the following represents the given mode of hybridization $$sp^2 - sp^2 - sp - sp$$ from left to right?
  • $$CH_2 = CH - C \equiv N$$
  • $$CH_2 = C = C = CH_2$$
  • $$CH_2 = CH - CH = CH_2$$
  • $$CH_2 = C = CH - CH_3$$
Predict the order of $$\Delta_0$$ for the following compounds.
I. $$[Mn(H_2O)_6]^{2+}$$
II. $$[Mn(CN)_2(H_2O)_4]$$
III. $$[Mn(CN)_4(H_2O)_2]^{2-}$$
  • $$\Delta_0 (I) < \Delta_0 (II) < \Delta_0 (III)$$
  • $$\Delta_0 (II) < \Delta_0 (I) < \Delta_0 (III)$$
  • $$\Delta_0 (III) < \Delta_0 (I) < \Delta_0 (I)$$
  • $$\Delta_0 (I) < \Delta_0 (III) < \Delta_0 (II)$$
The CFSE of $$[Mn(H_2O)_6]^{2+}$$ is:
  • -1.2 $$\Delta_{\Theta}$$
  • -1.9 $$\Delta_{\Theta}$$
  • 0
  • -2.4 $$\Delta_{\Theta}$$
The formula of the complex, tris- (ethylenediamine) cobalt (iii) sulphate is:
  • $$ [Co(en)_{2}SO_{4}] $$
  • $$ [Co(en)_{3}SO_{4}] $$
  • $$ [Co(en)_{3}]_{2}(SO_{4})_{3} $$
  • $$ [Co(en)_{3}]_{2}SO_{4} $$
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
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