CBSE Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 3 - MCQExams.com

Hypo is used in photography because it is :
  • A strong reducing agent
  • A strong oxidizing agent
  • A strong Complexing agent
  • Photo sensitive Compound
Select the correct I.U.P.A.C. name for [PtCl$$_6$$]$$^{2-}$$:
  • Hexachloridoplatinate (IV) ion
  • Hexachloridoplatinum (II) ion
  • Hexachloridoplatinate (2-) ion
  • Hexachloridoplatinum (2-) ion
Find the ratio of geometrical isomers in [M(AA)$$_2$$b$$_2$$] and optical isomers of [M(AA)$$_3$$].
  • 1
  • 2
  • 1.5
  • 2.5
Silver halides are used in photography because they are -
  • Photosensitive
  • Soluble in hypo solution
  • Soluble in $$NH_4OH$$
  • Insoluble in acids
Which of the following inert gas has the smallest ionization energy ?
  • He
  • Ne
  • Ar
  • Xe
Mg is an important component of which biomolecule occurring extensively in living world ?
  • Hemoglobin
  • Chlorophyll
  • Florigen
  • ATP
Developed photography film is due to :
  • $$AgBr$$
  • $$[Ag(S_2O_3)_2]^{3+}$$
  • $$Ag$$
  • $$Ag_2O$$
Secondary valencies correspond to ____________ of the metal atom and are satisfied by ligands.
  • coordination number
  • valency
  • element
  • molecules
Total number of stereoisomers of $$[Co(acac)_{2}BrCl]^{\ominus}$$ are.
  • $$4$$
  • $$3$$
  • $$6$$
  • $$2$$
Chlorobenzene is o, p -directing in electrophilic substitution reaction. The directing influence is explained by
  • +M of Ph
  • +I of Cl
  • +M of Cl
  • -I of Ph
Calculate the octahedral crystal field splitting energy in kJ/mol for $$[Fe(CN)_6]^{4-}$$, if the wavelength of the most intensely absorbed light is 305 nm.
  • 392 kJ/mol
  • 643 kJ/mol
  • 238 kJ/mol
  • 456 kJ/mol
Amongest $$N{ O }_{3}^{-}\,, AsO_{3}^{3-}\, CO_{3}^{2-},\, Cl{ O }_{3}^{-},\, SO_{3}^{2-}$$ and $$BO_{3}^{3-}$$, the non - planar species are:
  • $$CO_{3}^{2-}, SO_{3}^{2-}$$ and $$BO_{3}^{3-}$$
  • $$AsO_{3}^{3-},\, ClO_{3}^{-}$$ and $$SO_{3}^{2-}$$
  • $$N{ O }_{3}^{-}\, CO_{3}^{2-},\, CO_{3}^{2-}$$ and $$BO_{3}^{3-}$$
  • $$AsO_{3}^{3-},\, Cl{ O }_{3}^{-}$$ and $$BO_{3}^{3-}$$
State True or False.
In hybridisation, only orbitals are involved and not electrons.
  • True
  • False
State True or False.
All the orbitals in a set of hybridised orbitals have the same shape and energy 
  • True
  • False
A hybrid orbital formed from s-and p-orbital can contribute to:
  • a $$\sigma $$ bond only
  • $$\pi$$ bond only
  • either $$\sigma \;or\;\pi$$ bond
  • none of these
Which of the following statements is not correct ?
  • Hybridization is the mixing of atomic orbitals of large energy difference.
  • $$sp^2$$-hybrid orbitals are formed from two p - atomic orbitals and ones - atomic orbitals.
  • $$dsp^2$$-hybtrid orbitals are all at 90 to one another.
  • $$d^2sp^3$$-hybrid orbitals are directed towards the corners of a regular octahedron.
In the electronic configurations of elements $$A\;and\;B$$ are $$1s^2,\,2s^2\;2p^6,\,3s^1\;and\;1s^2,\,2s^2\;2p^6,\,3s^2\;3p^4$$ respectively, then the formula of the compound formes by the combination of these elements will be
  • $$AB$$
  • $$AB_3$$
  • $$AB_2$$
  • $$A_2B$$
In the complex $$CoCl_3\cdot 5NH_3$$, the number of ions satisfying primary and secondary valencies of cobalt(III) are:
  • 3, 0
  • 2, 1
  • 1, 2
  • 0, 3
Which element is not present in chlorophyll?
  • Carbon
  • Calcium
  • Magnesium
  • Hydrogen
In the electronic configurations of elements A and B are $$1s^2, 2s^2 2p^6, 3s^1$$ and $$1s^2, 2s^2, 2p^6, 3s^2, 3p^4$$ respectively, then the formula of the compound formed by the combination of these elements will be
  • $$AB$$
  • $$AB_3$$
  • $$AB_2$$
  • $$A_2B$$
The correct increasing order of trans-effect of the following species is:
  • $$Br^- > CN^- > NH_3 > {C_6 H_5}^-$$
  • $$CN^- > Br^- > C_6H_5^- > NH_3$$
  • $$NH_3 > CN^- > Br^- > {C_6 H_5}^-$$
  • $$CN^- > {C_6 H_5}^- > Br^- > NH_3$$
The formula for lithium iodotris(trifluorophosphine)nickelate(0) is:
  • $$Li[Ni(PF_3)_3]$$
  • $$Li[Ni(PF_3)_3I_3]$$
  • $$Li[(PF)_3I_3]$$
  • none of these
Use the figure below to answer the question that follows.
For which of the molecules in the figure does the central atom, or atoms, have $$sp^{2}$$ hybridization?
526423_d3df6a2ca54f422f87065916d53cb63f.png
  • III only
  • IV only
  • III and IV only
  • II and IV only
Select the correct IUPAC name for $$[Co(NH_3)_6]^{2+}$$.
  • Hexammoniacobaltate(II) ion
  • Hexaamminecobaltate(II) ion
  • Hexammoniacobalt(II) ion
  • Hexaamminecobalt(II) ion
What is the correct name of $$I{F}_{7}$$?
  • Iron heptafluoride
  • Iodine heptafluoride
  • Iodine septafluoride
  • Iron (IV) septafluoride
In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion $$(Ca^{2+})$$ and fluoride ion $$(F^-)$$ are:
  • 8 and 4
  • 4 and 8
  • 4 and 2
  • 6 and 6
Select the correct IUPAC name for $$[FeF_4(OH_2)_2]{^-}$$.
  • Diaquatetrafluoroiron(III) ion
  • Diaquatetrafluoroferrate(III) ion
  • Diaquatetrafluoroiron(I) ion
  • Diaquatetrafluoroferrate(I) ion
In C-C bond is $$C_2H_6$$ undergoes heterolytic fission, the hybridisation of two resulting carbon atoms is/are :
  • $$sp^2$$ both
  • $$sp^3$$ both
  • $$sp^2,sp^3 $$
  • $$sp,sp^2$$
Among the following coordination compounds, the one giving a white precipitate with $$BaCl_2$$ solution is:
  • $$[Cr(H_2O)_5 Br]SO_4$$
  • $$[Cr(H_2O)_5 SCN]$$
  • $$[Co(NH_3)_5 SO_4]Br$$
  • $$[Pt(NH_3)_6]Cl_4$$
The shapes of $$IF_3$$ and $$IF_7$$ are respectively:
  • square pyramidal and pentagonal bipyramidal
  • octahedral and pyramidal
  • trigonal bipyramidal and square antiprismatic
  • distorted square planar and distorted octahedral
There is change in the type of hybridisation when:
  • $$NH_3$$ combines with $$H^+$$
  • $$AlH_3$$ combines with $$H{^-}$$
  • $$NH_3$$ forms $$NH_2{^-}$$
  • $$SiF_4$$ forms $$SiF_4^{2-}$$
The hybridisation and geometry of $$BrF_3$$ molecules are:
  • $$sp^3d$$ and $$T$$ shaped
  • $$sp^2d^2$$ and tetragonal
  • $$sp^3d$$ and bent
  • none of these
The geometry of $$[Ni(CN)_4]^{2-}$$ is:
  • tetrahedral
  • square planar
  • triangular
  • octahedral
The IUPAC name of $$[Ni(CO)_4]$$ is :
  • Tetracarbonyl nickelete (0)
  • Tetracarbonyl nickelete (II)
  • Tetracarbonyl nickel (0)
  • Tetracarbonyl nickel (II)
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
What is the angle between any two bonds in methane molecule?
  • $$105^o54'$$
  • $$109^o28'$$
  • $$119^o28'$$
  • $$190^o28'$$
Which of the following biomolecules contain non-transition metal ion?
  • Vitamin $$B_{12}$$
  • Chlorophyll
  • Haemoglobin
  • Insulin
Which of the following $$0.1M$$ complex compound solutions will have the minimum electrical conductivity?
  • Hexammine platinum (IV) chloride
  • Chloropenta ammine platinum (IV) chloride
  • Dichloro tetrammine platinum (IV) chloride
  • Trichloro tetrammine platinum (IV) chloride
Which compound is formed when excess of $$KCN$$ is added to an aqueous solution of copper sulphate?
  • $$Cu(CN)_2$$
  • $$K_2[Cu(CN)_2]$$
  • $$K[Cu(CN)_2]$$
  • $$K_3[Cu(CN)_4]$$
The isomerism exhibited by following compounds $$[Co(NH_3)_6][Cr(CN)_6]$$ and $$[Cr(NH_3)_6][Co(CN)_6]$$ is:
  • ionization isomerism
  • polymerization isomerism
  • linkage isomerism
  • coordination isomerism
An octahedral complex is formed when hybrid orbitals of the following type are involved:
  • $${sp}^{3}$$
  • $$d{sp}^{2}$$
  • $${d}^{2}{sp}^{3}$$
  • $${sp}^{2}{d}^{2}$$
The number of isomers for the compound with the molecular formula $$\mathrm{C}_2\mathrm{Br Cl F I}$$ is :
  • 3
  • 4
  • 5
  • 6
The coordination of $$Pt$$ in the complex ion $$[Pt (en)_2Cl_2]^{2+}$$ is:
  • 3
  • 4
  • 5
  • 6
$$Al_4C_3$$ on hydrolysis yields
  • nitrogen
  • methane
  • hydrogen
  • all the above
In which one of the following the central atom is $$sp^{3}$$ hydridised?
  • $$NH_{4}^{+}$$
  • $$BF_{3}$$
  • $$SF_{6}$$
  • $$PCl_{5}$$
  • $$XeF_{4}$$
In $$TeCl_4$$, the central atom tellurium involves:
  • $$sp^3$$ hybridisation
  • $$sp^3d$$ hybridisation
  • $$dsp^2$$ hybridisation
  • $$sp^3d^2$$ hybridisation
Coordinate bond is formed in:
  • $$NaCl$$
  • $${ NH }_{ 4 }Cl$$
  • $${ Cl }_{ 2 }$$
  • $$B{ Cl }_{ 3 }$$
When 0.01 mole of a cobalt complex is treated with excess silver nitrate solution, 4.305 g silver chloride is precipitated. The formula of the complex is:
  • $$[Co(NH_3)_6]Cl_3$$
  • $$[Co(NH_3)_6Cl_3]$$
  • $$[Co(NH_3)_5Cl]Cl_2$$
  • $$[Co(NH_3)_4Cl_2]NO_3$$
The concept hybridisation of orbits of an atom was introduced by ______.
  • Linus Pauling
  • Moseley
  • Lewis
  • Kossel
In spectrochemical series, chlorine is above water i.e., $$Cl> {H}_{2}O$$. This is due to:
  • Good $$\pi -$$ acceptor properties of $$Cl$$
  • Strong $$\sigma -$$ and good $$\pi -$$ acceptor properties of $$Cl$$
  • Good $$\pi -$$ donor properties of $$Cl$$
  • Larger size of $$Cl$$ than $${H}_{2}O$$
  • None of the option
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