CBSE Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 13 - MCQExams.com

$$NCl_3$$ and $$BCl_3$$ are mixed in a container. Which the following is true for hybridisation of $$N$$ and $$B$$ the product formed by bonding of $$NCl_3$$ and $$BCl_3$$?
  • Hybridisation of $$N$$ changes but for $$B$$ it remains same 
  • Hybridisation of $$B$$ changes but for $$N$$ it remains same
  • Hybridisation of both $$N$$ and $$B$$ change
  • Hybridisation of neither $$N$$ nor $$B$$ changes
The number of $${Cl}^{-}$$ combined by secondary valency in  $$[Fe{({NH}_{3})}_{4}{Cl}_{2}]Cl$$ is ______
  • 1
  • 2
  • 3
  • 0
Which of the following complexes is not correctly matched with hybridization of its central metal?
  • $$[CoF_6]^{3-} ; d^2 sp^3$$
  • $$[Ni(CO)_4] ; sp^3$$
  • $$[Cr (H_2O)_6]^{3+} ; d^2 sp^3$$
  • $$[Pt (NH_3)_4]^{2+} ; d sp^2$$
Which compound to use for treatment of tumor?
  • $$Cis\left[ Pd{ Cl }_{ 2 }{ \left( { NH }_{ 3 } \right) }_{ 2 } \right] $$
  • $$Trans\left[ Pd{ Cl }_{ 2 }{ \left( { NH }_{ 3 } \right) }_{ 2 } \right] $$
  • $$Cis\left[ Pt{ Cl }_{ 2 }{ \left( { NH }_{ 3 } \right) }_{ 2 } \right] $$
  • $$Trans\left[ Pt{ Cl }_{ 2 }{ \left( { NH }_{ 3 } \right) }_{ 2 } \right] $$
Which of the following represent E isomer?
Which of the following complexes form facial and meridional isomers?
  • $$[Cr(H_2O)_5Cl]^{+2}$$
  • $$[Cr(NH_3)_5Br]SO_4$$
  • $$[Cr(NH_3)_3(NO_2)_3]$$
  • $$[Cr(ox)_3]^{3-}$$
Tetravalency of carbon is possible in the case of
  • $$  s p^{3} $$ -hybridisation
  • $$s p^{2} $$ -hybridisation
  • $$s p $$ -hybridisation
  • all of these
The given compounds are______isomer of each other.
1565402_d748e634bf87450a8852268a1d3415f1.PNG
  • Positional
  • Chain
  • Geometrical
  • Functional
Which of the following statement is incorrect?
  • The tendency to attract bonded pair of the electron in case of hybrid orbitals follows the order:   $$sp > sp^2 > sp^3$$
  • Alkali metals generally have negative value of electron gain enthalpy
  • $$Cs^+(g)$$ releases more energy upon gain of an electron than $$Cl(g)$$
  • The electronegativity values for $$2$$p-series elements is less than that for $$3$$p-series elements on account of small size and high inter electronic configuration
The compound $$PtCl_2\cdot 2NH_3$$ does not react with $$AgNO_3$$. This compound can be represented as?
  • $$[Pt(NH_3)_2Cl]Cl$$
  • $$[Pt(NH_3)_2Cl_2]$$
  • $$[Pt(NH_3)_2]Cl_2$$
  • both B  and C

Which of the following represent $$sp - sp - sp^2 - sp - sp^2 - sp^3$$ hybridization from left to right order?
  • $$CH_2= CH - C = \overset{H}{\overset{|}{C}} - C \equiv N$$
  • $$CH \equiv C - CH = C = CH-CH_3$$
  • $$N \equiv C - \overset{H}{\overset{|}{C}} - \underset{H}{\underset{|}{C}} - CH - CH_3$$
In $$CuSO_4.5H_2O$$ how many molecules of water are indirectly connected to Cu? 
  • $$5$$
  • $$4$$
  • $$2$$
  • $$1$$
Which among the following is used in the treatment of cancer?
  • cis-$$[Pt(en)_2Cl_2]$$
  • cis-$$[PtCl_2(NH_3)_2]$$
  • trans-$$[Pt(en)_2Cl_2]$$
  • trans-$$[Pt(NH_3)_2Cl_2]$$
When two or more complexes are combined, it is
  • Pattern
  • Theme
  • Complex
  • All of these
The compound that inhibits the growth of tumors is:
  • $$cis-[Pd(Cl)_2 (NH_3)_2]$$
  • $$cis-[Pt(Cl)_2 (NH_3)_2]$$
  • $$trans-[Pt(Cl)_2 (NH_3)_2]$$
  • $$trans-[Pd(Cl)_2 (NH_3)_2]$$
The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to $$+3$$ state is: 

1614858_d49e450a88bf4085bbd7a3399ddcfebf.png
  • $$[Fe(phen)_3]^{2+}$$
  • $$[Zn(phen)_3]^{2+}$$
  • $$[Ni (phen)_3]^{2+}$$
  • $$[Co(phen)_3]^{2+}$$
Complete removal of both the axial ligands (along the z-axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale). 
The degenerate orbitals of $${ \left[ Cr{ \left( { H }_{ 2 }O \right)  }_{ 6 } \right]  }^{ 3+ }$$ are:
  • $${d}_{yz}$$ and $${d}_{{z}^{2}}$$
  • $${d}_{{z}^{2}}$$ and $${x}_{xz}$$
  • $${d}_{xz}$$ and $${d}_{yz}$$
  • $${d}_{{x}^{2}-{y}^{2}}$$ and $${d}_{xy}$$
Which complex among the following gives a white precipitate on treatment with an aqueous solution of barium chloride?
  • $$[Pt(NH_3)_4Br_2]Cl_2$$
  • $$[Co(NH_3)_5SO_4]NO_2$$
  • $$[Co(NH_3)_5NO_2]SO_4$$
  • $$[Pt(NH_3)_4Cl_2]Br_2$$
A molecule $$(X)$$ has (i) four sigma bonds formed by the overlap of $$sp^{2}$$ and $$s$$ orbitals; (ii) one sigma bond formed by $$sp^{2}$$ and $$sp^{2}$$ - orbitals and (iii) one $$\pi-bond$$ formed by $$p_{z}$$ and $$p_{z}$$ orbitals. Which of the following is $$X$$?
  • $$C_{2}H_{6}$$
  • $$C_{2}H_{5}Cl$$
  • $$C_{2}H_{2}Cl_{2}$$
  • $$C_{2}H_{4}$$
The complexes $$[CoNO_2(NH_3)_5]Cl_2$$ and $$[Co(ONO)(NH_3)_5]Cl_2$$ are not the examples of.
  • Geometrical isomers
  • Optical isomers
  • Coordination isomers
  • Linkage isomers
The total number of possible coordination isomer for the given compound $$[Pt(NH_3)_4Cl_2][PtCl_4]$$ is?
  • $$2$$
  • $$4$$
  • $$5$$
  • $$3$$
The octahedral complex $$CoSO_4Cl_5\,NH_3$$ exists in two isomeric forms $$X$$ and $$Y$$. Isomers $$X$$ reacts with $$AgNO_3$$ to give a white precipitate, but does not react with $$BaCl_2$$. Isomer $$Y$$ gives white precipitate with $$BaCl_2$$ but does not react with $$AgNO_3$$.
Isomers $$X$$ and $$Y$$ are: 
  • ionization isomers
  • linkage isomers
  • coordinating isomers
  • solvent isomers
Brown ring complex known as:
  • $$K_4[Fe(CN)_6]$$
  • $$[Fe(NO)(H_2O)_5]SO_4$$
  • $$[Fe(NO)_2)(H_2O)_4]Br_2$$
  • $$[FeF_6]^{3-}$$
The complexes $$[Cr(NH_3)_6][Co(CN)_6]$$ and $$[Co(NH_3)_6][Cr(CN)_6]$$ are not the example of?
  • Geometrical isomers
  • Optical isomers
  • Coordination isomers
  • Linkage isomers
Select the correct statement(s) :
  • $$ BF_3 > Me_3B $$
  • $$ HC \equiv C-H (sp\ carbon) < H_2C = CH -H (sp^2 \ carbon)< H_3C- CH_2 -H(sp^3\ carbon ) $$
  • $$ BF_3 < Me_3B $$
  • $$ HC \equiv C -H (sp\ carbon) > H_2C=CH-H (sp^2\ carbon) > H_3C-CH_2 -H (sp^3\ carbon) $$
VSEPR theory suggest a small departure from $$ 109^0 28'$$ for $$ NH_3 $$ molecule. The H-N-H bond angle has been found to be $$ 107^0 $$ what kind of hybrid orbital will be occupied by the non -bonding pair of electron?
  • $$ sp^3 $$
  • $$ sp^{3.4} $$
  • $$ sp^{2.13} $$
  • $$ sp^2 $$
Select the correct statement for $$ P_4O_{10} $$
  • It has four $$ sp^3 $$-hybridized phosphorous atoms
  • It has higher $$s\%$$ charcter in $$P-O$$ bond than the $$ P_4O_6 $$
  • It has cage -like structure
  • It has $$ p_{ \pi} -d_{ \pi} $$ bonding
Select the correct options for following statement(s) : 
  • $$ sp^3 $$ hybrid orbitals are at $$ 90^0$$ to one another
  • $$ sp^3d^2 $$ adjacent hybrid orbitals are at $$ 90^0 $$ to one another
  • $$ sp^2 $$ hybrid orbitals are at $$ 120^0 $$ to one another
  • Bond order of $$ N-O $$ bond in $$ NO_3^- $$ is $$ 1 \dfrac {1}{3} .$$
Choose the correct statement regarding the complexes X and Y:
(I) Both complexes have the same six geometrical isomer.
(II) Both complexes have nearly the same conductivity in $$H_2O$$.
(III) In both complexes, $$NH_3$$ is involved only to secondary valency.
(IV) In both complexes, electronic configuration of $$t_{2g}$$ is same.
  • I, II and III
  • I, II, III and IV
  • II, III and IV
  • I, III and IV
Which of the following sets of molecule(s) is/are having a linear shape but different hybridization?
  • $$I^-_3$$ and $$CO_2$$
  • $$HgCl_2$$ and $$ICl^-_2$$
  • $$XeF_2$$ and $$C_2H_2$$
  • $$XeF_2$$ and $$OCl^-$$
Which of the following sets of the molecule(s) is/are having a V-shape but different hybridization? 
  • $$SnCl_2$$ and $$H_2O$$
  • $$SO_2$$ and $$NO^+_2$$
  • $$BF^-_2$$ and $$SCl_2$$
  • $$OF_2$$ and $$SCl_2$$
In V.B.T., the idea of hybridization was required to explain which of the following facts: 
  • The equivalence of the bonds in most of the com-pounds
  • The stereochemistry of the molecules
  • The better overlapping of the orbitals
  • None of these
Match the complex species given in Column-I with the possible isomerism given in Column-II and assign the correct code.
Column-I(Complex species)Column-II(Isomerism)
(a) $$[Co(NH_3)_4Cl_2]^+$$(p) Optical
(b) cis-$$[Co(en)_2Cl_2]^+$$(q) Ionization
(c) $$[Co(NH_3)_5(NO_2)]Cl_2$$(r) Coordination
(d) $$[Co(NH_3)_6][Cr(CN)_6]$$(s) Geometrical
(t) Linkage
  • a(p) b(q) c(s) d(t)
  • a(s) b(r) c(q) d(p)
  • a(s) b(p) c(q,t) d(r)
  • a(s) b(p) c(q) d(r)
Complexes A and B are respectively.
  • $$[Cr(NH_3)_4Cl_2]Br, [Cr(NH_3)_4Br]Cl_2$$
  • $$[Cr(NH_3)_4Br]Cl_2, [Cr(NH_3)_4Cl_2]Br$$
  • $$[Cr(NH_3)_4ClBr]Cl, [Cr(NH_3)_4Cl_2]Br$$
  • $$[Cr(NH_3)_4Cl_2]Br, [Cr(NH_3)_4ClBr]Cl$$
Complex A is?
  • $$[Cr(H_2O)_6]Cl_3$$
  • $$[Cr(H_2O)_5Cl]Cl_2\cdot H_2O$$
  • $$[Cr(H_2O)_4Cl_2]Cl\cdot 2H_2O$$
  • None of these
One mole of the complex compound $$Co(NH_3)_5Cl_3$$ gives $$3$$ moles of ions on dissolution in water. One mole of the same complex reacts with two moles of $$AgNO_3$$ solution to yield two moles of $$AgCl(s)$$. The structure of the complex is?
  • $$[Co(NH_3)_3Cl_3]\cdot 2NH_3$$
  • $$[Co(NH_3)_4Cl_2]\cdot 2NH_3$$
  • $$[Co(NH_3)_4Cl]Cl_2\cdot NH_3$$
  • $$[Co(NH_3)_5Cl] Cl_2$$
Coordination compounds have great importance in biological systems. In this context, which of the following statements is incorrect?
  • Cyanobalamin is $$B_{12}$$ and contains cobalt.
  • Hemoglobin is the red pigment of blood and contains irons.
  • Chlorophylls are green pigments in plants and contains calcium.
  • Carboxypeptidase-A is an enzyme and contains zinc.
The correct order regarding electronegativity of hybrid orbitals of carbon is: 
  • $$ sp < sp^2 < sp^3 $$
  • $$ sp < sp^2 >sp^3 $$
  • $$ sp > sp^2 < sp^3 $$
  • $$ sp > sp^2 > sp^3 $$
Carbon dioxide is isostructural with:
  • $$HgCl_2$$
  • $$SnCl_2$$
  • $$C_2H_2$$
  • $$NO_2$$
$$ 2Fe_2(SO_4)_3+3K_4[Fe(CN)_6]\rightarrow X+6K_2SO_4$$
What is the name of X? if-
  • represents brown ring complex
  • represents sodium nitroprusside
  • represents Prussian blue
  • represents chromyl chloride
What is the formula of X if 
1728312_5c8eb3dcfa564a9e88b648cf2fe49aa9.JPG
  • represents $$CrO_{4}^{2-}$$
  • represent $$CrO_{5}$$
  • represent $$Cr_2O_{7}^{2-}$$
  • represents $$CrO_2Cl_2$$
$$Na_2S+Na_2[Fe(CN)_5NO]\rightarrow X$$ (purple color)
What is the formula of X? 
  • $$Fe_4[Fe(CN)_6]$$
  •  $$[Fe(H_2O)_5NO]SO_4$$
  •  $$[Fe(H_2O)_5NO]$$
  •  $$Na_4[Fe(CN)_5(NOS)]$$
A solution containing $$2.675$$g of $$CoCl_3\cdot 6NH_3$$ (molar mass $$=267.5$$ g $$mol^{-1}$$) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of $$AgNO_3$$ to give $$4.78$$g of $$AgCl$$(molar mass$$=143.5$$g $$mol^{-1}$$). The formula of the complex is?
  • $$[Co(NH_3)_6]Cl_3$$
  • $$[CoCl_2(NH_3)_4]Cl$$
  • $$[CoCl_3(NH_3)_3]$$
  • $$[CoCl(NH_3)_5]Cl_2$$
Complex manure is that which supplies:
  • $$S, K$$ and $$N$$
  • $$N, K$$ and $$P$$
  • $$S$$ and $$N$$
  • $$S, N$$ and $$P$$
Match each coordination compound in List-I with an appropriate pair of characteristics from List-II and select the correct answer using the code given in the lists.

$$\{en =H_2NCH_2CH_2NH_2$$ 'atomic numbers; $$Ti=22; Cr=24; Co=27 Pt=78\}$$

List-IList-II
(P) $$[Cr(NH_3)_4Cl_2]Cl$$$$(1)$$ Paramagnetic and exhibits ionization isomerism
(Q) $$[Ti(H_2O)_5Cl](NO_3)_2$$$$(2)$$ Dimagnetic and exhibits cis-trans isomerism
(R) $$[Pt(en)(NH_3)Cl]NO_3$$$$(3)$$ Paramagnetic and exhibits cis-trans isomerism
(S) $$[Co(NH_3)_4(NO_3)_2]NO_3$$$$(4)$$ Dimagnetic and exhibits ionization isomerism

  • P-$$4$$, Q-$$2$$, R-$$3$$, S-$$1$$
  • P-$$3$$, Q-$$1$$, R-$$4$$, S-$$2$$
  • P-$$2$$, Q-$$1$$, R-$$3$$, S-$$4$$
  • P-$$1$$, Q-$$3$$, R-$$4$$, S-$$2$$
Which one of the following has the largest number of isomers?
  • $$[Ir(PR_3)_2H(CO)]^{2+}$$
  • $$[Co(NH_3)_5Cl]^{2+}$$
  • $$[Ru(NH_3)_4Cl_2]^+$$
  • $$[Co(en)_2Cl_2]^+$$ ($$R=$$ alkyl group, $$en=$$ ethylenediamine)
What is the formula of brown ppt.?
  • $$Cu_2I_2$$
  • $$Cu_2I_2+I_{3}^{-}$$
  • $$CuI_2$$
  • $$CuSO_4$$
Which of the following complex is formed when A reacts with $$K_4[(Fe(CN)_6]$$?
  • Prussian blue
  • Turnbull's blue
  • Brown ring complex
  • Sodium nitroprusside
What is the formula of brown ppt?
  • $$Fe(OH)_3$$
  • $$Fe(OH)_2$$
  • $$FeCl_3$$
  • None of these
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