CBSE Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 7 - MCQExams.com

Correct increasing order for the wavelength of absorption in the visible region for the complexes of $$Co^{3+}$$ is?
  • $$[Co(CN)_6]^{3-}, [Co(NH_3)_6]^{3+}, [Co(NH_3)_5(H_2O)]^{3+}[Co(NH_3)_5Cl]^{+2}$$
  • $$[Co(CN)_6]^{3-}, [Co(NH_3)_5(H_2O)]^{3+}[Co(NH_3)_5Cl]^{+2}[Co(NH_3)_6]^{3+}$$
  • $$[Co(NH_3)_6]^{3+}, [Co(CN)_6]^{3-}, [Co(NH_3)_5(H_2O)]^{3+}[Co(NH_3)_5Cl]^{+2}$$
  • $$[Co(NH_3)_5Cl]^{+2}, [Co(NH_3)_5(H_2O)]^{3+}, [Co(NH_3)_6]^{3+}, [Co(CN)_6]^{3-}$$
The Hybridisation and magnetic behavior of complex $$[Ni(CO)_{4}]$$ is
  • $$dsp^{2}$$, paramagnetic
  • $$dsp^{2}$$, diamagnetic
  • $$sp^{3}$$, paramagnetic
  • $$sp^{3}$$, diamagnetic
The hybrid states of carbon atoms in $${(\overset{B}CN)_4}\overset{A}{C_2}$$ are A and B and number of $$\pi$$ bonds in compound is C. Then?
  • $$A=sp, B=sp^2$$ and $$C=9$$
  • $$A=sp^2, B=sp$$, and $$C=9$$
  • $$A=sp^3, B=sp$$ and $$C=9$$
  • $$A=sp^2, B=sp^2$$ and $$C=9$$
The compound $$[CoCl_2(NH_3)_2(en)]$$ can form:
  • Linkage isomers
  • Coordination isomers
  • Optical isomers
  • Linkage as well as optical isomers
$$d_{x^2-y^2}$$ orbital is involved in which of the following hybridization?
  • $$sp^3d$$ (sq. pyramidal)
  • $$dsp^2$$
  • $$sp^3d^2$$
  • $$sp^3d^3$$
In the hydrocarbon, $$H_3\underset{6}{C}-\underset{5}{C}H=\underset{4}{C}H-\underset{3}{C}H_2-\underset{2}{C}\equiv \underset{1}{C}H$$

The state of hybridization of carbons $$1, 3, 5$$ are in the following sequence is:
  • $$sp, sp^2, sp^3$$
  • $$sp^3, sp^2, sp$$
  • $$sp^2, sp, sp^3$$
  • $$sp, sp^3, sp^2$$
Complexes A and B have similarity in which type of isomerism?
  • Hydrate
  • Ionization
  • Linkage
  • Coordination
Which of the above is a pair of geometrical isomers?
1717630_f6b7569056484dfe90d3810459926b8b.png
  • $$I,II$$
  • $$I,III$$
  • $$II,IV$$
  • $$III,IV$$
Square planar complex of the type MAXBL(where A, B, X and L are unidentate ligands) shows following set of isomers.
  • two cis and one trans
  • two trans and one cis
  • two cis and two trans
  • three cis and one trans
The hybrid state and oxidation state of two oxygen atoms in $$H_2O_2$$ are respectively:
  • $$sp^2, -1$$
  • $$sp^2, +1$$
  • $$sp^3, -1$$
  • $$sp^3, +1$$
Which of the following hybridization results in non-planar orbitals?
  • $$ sp^3 $$ 
  • $$ dsp^2 $$
  • $$ sp^2 $$
  • $$ dsp^3 $$
The hybridisation of oxygen atom in $$H_2O_2$$ is:
  • $$sp^3d$$
  • $$sp$$
  • $$sp^2$$
  • $$sp^3$$
  • $$sp^3d^2$$
On hybridization of one s- and one p-orbital we get :
  • Two mutually perpendicular orbitals
  • Two orbitals at $$ 180^0 $$
  • Four orbitals directed tetrahedrally
  • Three orbitals in a plane
On hybridization of one s-and one p-orbitals, we get:
  • Two mutually perpendicular orbitals
  • Two orbitals at $$ 180^o $$
  • four orbitals directed tetrahedrally
  • Three orbitals in the plane
Hybridisation of the _____atom change sin:
  • $$ AIH_3 to AlH_4^- $$
  • $$ H_2O to H_3 O^+ $$
  • $$ NH_2^- $$
  • $$ NF_3 $$
The hybridization of I in ICl$$_2^+$$ is :
  • $$sp$$
  • $$ sp^2 $$
  • $$ sp^3 $$
  • $$ dsp^2 $$
In the following case(s) , hybridization of the underlined atom is affected:
  • $$ PCl_5 $$ (solid) dissociates into $$ PCl_4^+ and PCl_6^- $$
  • $$LiH$$ reacts with $$ AlH_3$$ forming $$LiAlH_4 $$
  • $$ NH_3 $$ is protonated
  • $$ H_3PO_2 $$ is heated forming $$ PH_3$$ and $$H_3PO_3 $$
When $$1$$ mol $$CrCl_3\cdot 6H_2O$$ is treated with excess of $$AgNO_3, 3$$ mol of $$AgCl$$ are obtained. The formula of the complex is?
  • $$[CrCl_3(H_2O)_3]\cdot 3H_2O$$
  • $$[CrCl_2(H_2O)_4]Cl\cdot 2H_2O$$
  • $$[CrCl(H_2O)_5]Cl_2\cdot H_2O$$
  • $$[Cr(H_2O)_6]Cl_3$$
Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type $$[Pd(C_6H_5)_2(SCN)_2]$$ and $$[Pd(C_6H_5)_2(NCS)_2]$$ are?
  • Linkage isomers
  • Coordination isomers
  • Ionization isomers
  • Geometrical isomers
In $$Cu$$-ammonia complex, the state of hybridisation of $$Cu^{2+}$$ is:
  • $$sp^3$$
  • $$sp^3d$$
  • $$sp^2$$
  • $$dsp^2$$
Which of the following two are isostructral?
  • $$XeF_2, IF_2^-$$
  • $$NH_3, BF_3$$
  • $$CO_3^{2-}, SO_3^{2-}$$
  • $$PCl_5, ICl_5$$
What is the formula of choclate colored ppt.?
  • $$Fe_4[Fe(CN)_6]$$
  • $$Cu_2[Fe(CN)_6]$$
  • $$Cu_2[Fe(CN)_4]$$
  • $$Cu(CN)_2$$
$$[Co(NH_3)_5Br]SO_4$$ and $$[Co(NH_3)_5SO_4]Br$$ are related to each other as :
  • ionization isomers
  • linkage isomers
  • coordination isomers
  • geometrical isomers
The formulae of $$(A)$$ and $$(B)$$ with colours are:
1734198_5e4b3bc80b9f435e8b0810c989c5dff7.png
  • $$Na_2CrO_4$$, yellow and $$PbCrO_4$$, yellow
  • $$Na_2Cr_2O_7$$, orange and $$PbCrO_4$$ , yellow
  • $$Cr(OH)_3$$, green and $$(CH_3COO)_3Cr$$, green
  • $$CrO_2Cl_2$$, red and $$(CH_3COO)_3 Cr$$, green
The loss or reduction of chlorophyll in the leaves is termed:
  • necrosis
  • chlorosis
  • epinasty
  • lichen
Which of the following is the odd one out?
  • Potassium ferrocyanide
  • Tetramminezinc(II) chloride
  • Ferrous ammonium sulphate
  • Potassium ferricyanide
One mole of the complex compound $$Co\left(NH_{3}\right)_{5}Cl_{3}$$, 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 $$AgCl\left(s\right)$$. The structure of the complex is
  • $$[Co(NH_{3})_{3}Cl_{3}].2NH_{3}$$
  • $$\left[Co\left(NH_{3}\right)_{4}Cl_{2}\right]Cl.NH_{3}$$
  • $$\left[Co\left(NH_{3}\right)_{4}Cl\right]Cl_{2}.NH_{3}$$
  • $$\left[Co\left(NH_{3}\right)_{5}Cl\right]Cl_{2}$$
Which one of the following compounds helps in achieving equilibrium between $$O_2$$ and $$CO_2$$ in the atmosphere?
  • Chlorophyll
  • Vitamin - B$$_{12}$$
  • Porphyrin
  • Acetyl salicylic acid
$$MgSO_{4}$$ on reaction with $$NH_{4}OH$$ and $$Na_{2}HPO_{4}$$ forms a white crystalline precipitate. What is its formula?
  • $$Mg(NH_{4})PO_{4}$$
  • $$Mg_{3}(PO_{4})_{2}$$
  • $$MgCl_{2}-MgSO_{4}$$
  • $$MgSO_{4}$$
Which of the following species is/are isostructural with $$IF_4^-$$?
  • $$[Cu(NH_3)_4]^{2+}$$
  • $$XeF_4$$
  • $$BF_4^-$$
  • $$[Ni(CN)_4]^{2-}$$
Ferrous Oxide is 
  • $$FeO$$
  • $$Fe_2O_3$$
  • $$Fe_3O_4$$
  • None of these.
Correct formula of Potassium Ferricyanide is
  • $$ K_4Fe(CN)_6 $$
  • $$ K_3[Fe(CN)_6] $$
  • $$ K_3[Fe(CN)_3] $$
  • $$ K_3[Fe(CN)_4] $$
Mohr's salt is
  • $$ FeSO_4. 7H_2O $$
  • $$ Fe(NH_4)SO_4 . 6H_2 O $$
  • $$ (NH_4)_2 SO_4 . FeSO_4 . 6H_2 O $$
  • $$ [Fe(NH_4)_2] (SO_4)_2. 6H_2 O $$
In which one of the following changes there are transfer of five electrons
  • $$Mn{O}_{4}^{-}\rightarrow {Mn}^{2+}$$
  • $$Cr{O}_{4}^{2-}{Cr}^{3+}$$
  • $$Mn{O}_{4}^{2-}Mn{O}_{2}$$
  • $${Cr}_{2}{O}_{7}^{2-} 2{Cr}^{3+}$$
The correct formula of the complex is 
  • $$ \left [ CoClBr(en)_{2} \right ]H_{2}O $$
  • $$ \left [ CoCl(en)_{2}(H_{2}O) \right ]BrCl $$
  • $$ \left [ CoBr(en)_{2} (H_{2}O)\right ] Cl_{2} $$
  • $$ \left [ CoBrCl(en)_{2} \right ]Cl.H_{2}O $$
Formula of ferric sulphate is 
  • $$ FeSO_4 $$
  • $$ Fe(SO_4)_2 $$
  • $$ Fe_2SO_4 $$
  • $$ Fe_2(SO_4)_3 $$
The primary valence of the metal ion in the co-ordination compound $$K_2[Ni(CN)_4]$$ is
  • four
  • zero
  • two
  • six
In $$K_4 Fe(CN)_6$$
  • $$(CN)$$ are linked with primary valency
  • $$(CN)$$ are linked with secondary valency
  • $$K$$ are linked with secondary valency
  • $$K$$ are linked with non-ionic valency
Haemoglobin is
  • An enzyme
  • A globular protein
  • A vitamin
  • A carbohydrate
Chlorophyll contains
  • Fe
  • Na
  • Mg
  • Zn
$$[Co(NH_3)_4Cl_2]^+$$ exhibits 
  • Geometrical isomerism
  • Optical isomerism
  • Bonding isomerism
  • Ionisation isomerism
The complex compounds which result from the coordination of carbon monoxides are known as
  • electronic
  • carbonyls
  • carbonates
  • carbon permono
The valency of cuprammonium ion is 
  • $$+4$$
  • $$+2$$
  • $$-2$$
  • $$-4$$
$$[Co(NH_3)_4Cl_2]NO_2$$ and $$[Co(NH_3)_4Cl.NO_2]Cl$$ are ___________ isomers.
  • Geometrical
  • Optical
  • Linkage
  • Ionization
Number of unhybridised orbitals in vinyl acetylene are 
  • $$2$$
  • $$3$$
  • $$4$$
  • $$6$$
The number of neutral molecules or negative groups attached to the central metal atom in a complex ion is called
  • atomic number
  • effective atomic number
  • coordination number
  • primary valency
The compounds $$ [Co(So_4)(NH_3)_5]Br $$ and $$ [Co(SO_4)(NH_3)_5]Cl $$ represent 
  • Linkage isomerism
  • Ionisation isomersim
  • coordination isomerism
  • no isomerism
Which of the following statement is correct ?
  • In $$BrF_3$$, maximum three halogen atoms can lie in same plane
  • In $$CH_2SF_2(CH_3)_2$$ molecule all hydrogen atoms which bonded to $$s - sp^2$$ overlapping, lie in equatorial plane
  • In $$OSCl_4$$, Cl - S - Cl equatorial bond angle is greater than $$120^0$$
  • Molecules$$IOF_5$$ and $$XeO_2F_4$$ have similar shape but have different number of lone pairs in whole molecule
Which of the following isomerism, exhibited by $$[CrCl_{2}(OH)_{2}(NH_{3})_{2}]^{-}$$?
  • Ionization
  • Geometrical
  • Hydrate
  • Linkage
In which of the following combination hybridisation of central atom (*) does not change ?
  • $$H_{2}O + CO_{2}$$
  • $$H_{3}BO_{3} + OH^{-}$$
  • $$BF_{3} + NH_{3}$$
  • None of these
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 12 Engineering Chemistry Quiz Questions and Answers