CBSE Questions for Class 12 Engineering Chemistry Coordination Compounds Quiz 6 - MCQExams.com

Which of the following is an EAN of iron in potassium ferricyanide?
  • $$28$$
  • $$36$$
  • $$35$$
  • $$39$$
Primary and secondary valency of  Pt in $$[Pt{ (en) }_{ 2 }{ Cl }_{ 2 }]{ Cl }_{ 2 }$$ are:
  • 4,4
  • 2,6
  • 6,6
  • None of these
Which of the following ligands is not a chelating agent?
  • EDTA
  • En
  • Oxalate
  • Pyridine
Which of the following complex will give white precipitate with BaCl$$_2$$ (aq)?
  • [Co(NH$$_2)_4SO_4]NO_2$$
  • [Cr(NH$$_3)_5SO_4$$]Cl
  • [Cr(NH$$_3)_5Cl]SO_4$$
  • Both $$B$$ and $$C$$
Which of the molecules is not tetrahedral?
  • $$\left[ Pt(en)_{ 2 } \right] ^{ 2+ }$$
  • $$\left[ Ni(Co)_{ 4 } \right]$$
  • $$\left[ Zn(NH_{ 3 })_{ 4 } \right] $$
  • $$\left[ { NiCl }_{ 4 } \right] ^{ 2- }$$
Which of the following name is impossible ?
  • Potassium tetrafluoridooxidochromate($$VI$$)
  • Barium tetrafluoridobromate($$III$$)
  • Dichlorobis(urea)copper($$II$$)
  • All are impossible
Which of the following statements is true about hybridization ?
  • Hybrid orbitals frequently undergo linear overlaps making sigma bonds.
  • Hybrid orbitals frequently undergo lateral overlaps maing $$\pi$$-bonds. In other words, there are several compounds in which $$\pi$$-bonds are formed using hybrid orbitals.
  • Hybrid orbitals are molecular orbitals.
  • A hybrid orbital bigger in size makes shorter bond.
In 2sp hybridization, 2s-orbital can be mixed with
  • Only $$2p_x$$
  • Only $$2p_y$$
  • Only $$2p_z$$
  • Any one of $$2p_x,2p_y$$ and $$2p_z$$
Hybridization of sulphur in $$SF$$$$_{4}$$ molecules are :
  • $$sp$$$$^{3}d^{3}$$
  • $$sp$$$$^{3}$$d
  • $$sp$$$$^{3}d^{2}$$
  • $$dsp$$$$^{2}$$
The bond angle and hybridization in ether $$(CH_3OCH_3)$$ is ______.
  • $$106.51^0 ,  sp^{2}$$
  • $$110^0$$ , $$sp^3$$
  • $$109.28^0,  sp^3$$
  • None of these.
The complex $$[Pt(NH_{3})_{4}]^{2+}$$ has ......structure :
  • square planer
  • tetrahedral
  • pyramidal
  • pentagonal
Choose  the correct options:
  • In $$O_2F_2$$, the $$O-F$$ bond length is lesser than expected value.
  • In trislyl amine $$(SiH_3)_3$$N, the bond length is lesser than expected value
  • The bond angle in $$OF_2$$ is lesser than in $$Cl_2O$$
  • The Be atom in $$BeCl_2(s)$$ is $$sp^3$$ hybridised.
In which of the following molecule, the central atom is used $$sp^{3}d$$ hybridized orbitals?
  • $$SF$$$$_{4}$$
  • $$NH$$$$_{3}$$
  • $$XeF$$$$_{2}$$
  • $$XeF$$$$_{4}$$
IUPAC name of the Wiilkinson's catalyst $$\left[ RhCl({ P\quad Ph }_{ 3 })_{ 3 } \right] $$
  • Chlorotris (triphenylphosphine) rhodium (I)
  • Chlorotris (triphenylphosphine) rhodium (IV)
  • Chlorotris (triphenylphosphine) rhodium (0)
  • Chlorotris (triphenylphosphine) rhodium (VI)
The structural formula of a compound is $$CH_3-CH=C=CH_2$$. The type pf hybridization at the four carbon atoms from left to right is?
  • $$sp^2, sp, sp^2, sp^3$$
  • $$sp^2, sp^3, sp^2, sp$$
  • $$sp^3, sp^2, sp, sp^2$$
  • $$sp^3, sp^2, sp^2, sp^2$$
Statement: Secondary valency of $$Ni^{+2}$$ is $$6$$ in $${[Ni{{(H_2O)}_6}]}^{2+}$$.

State whether the given statement is true or false.
  • True
  • False
The number of geometrical isomers of the complex $$\left[ {Co{{(N{O_2})}_3}{{(N{H_3})}_3}} \right]$$ is 
  • 2
  • 4
  • 3
  • 0
An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave C, $$38.71\%$$ and H, $$9.67\%$$. The empirical formula of the compound would be?
  • $$CH_4O$$
  • $$CH_3O$$
  • $$CH_2O$$
  • $$CHO$$
When $$K_{4}Fe(CN)_{6}$$ is added to $$FeCl^{3+}$$ complex compound formed is:
  • $$Fe_{3}[Fe(CN)_{6}]_{4}$$
  • $$Fe_{4}[Fe(CN)_{6}]_{3}$$
  • $$K_{2}Fe[Fe(CN)_{6}]$$
  • $$K_{2}Fe_{3}[Fe(CN)_{6}]_{2}$$
The effective atomic number rules is not obeyed by
  • $$[Ni(CO)_4]$$
  • $$K_4[Fe(CN)_6]$$
  • $$K_3[Fe(CN)_6]$$
  • $$[Fe(CO)_5]$$
Which of the following involves transfer of five electrons?
  • $$MnO_4^ - \to M{n^{2 + }}$$
  • $$CrO_4^{2 - } \to C{r^{3 + }}$$
  • $$MnO_4^{2 - } \to Mn{O_2}$$
  • $$C{r_2}O_7^{2 - } \to 2C{r^{3 + }}$$
The hybrid orbital having only 20% d character 
  • $$CC{l }_{ 4} $$
  • $$S{F }_{ 6} $$
  • $$S{F }_{ 4} $$
  • $$C{l }_{ 2}O $$
The hybridization of S atom in $$SO^{2-}_4$$ is?
  • $$sp$$
  • $$sp^2$$
  • $$sp^3$$
  • $$sp^3d$$
The highest value of the calculated spin only magnetic moment (in BM) among all the transition metal complexes is: 
  • $$ 5.92$$
  • $$ 3.87$$
  • $$6.93$$
  • $$ 4.90$$
The secondary valency of chromium in $$[Cr(en)_3]Cl_3$$ is:
  • $$6$$
  • $$3$$
  • $$2$$
  • $$4$$
Which of the following is not $$sp^3$$ hybridise 
  • $$BH_3$$
  • $$BH^-_4$$
  • $$NH_4^+$$
  • $$NH_3$$
The complex having the molecular composition $$[CO(NO_{2})(SCN)(en)_{2}]Br$$ exhibits
  • linkage isomerism
  • ionisation isomerism
  • cis-trans isomerism
  • all of these
Number of possible isomers for the complex $$[Co(en)_{2}Cl_{2}]Cl$$ will be _____________.
  • $$1$$
  • $$3$$
  • $$4$$
  • $$2$$
The primary valency of the central transition metal ion in the complex compound $$[Cr(NH_3)_4Cl_2]Cl$$ is:
  • $$3$$
  • $$2$$
  • $$1$$
  • $$0$$
Oxidation number of $$Cr$$ in $$[Cr[NH_3]_4 Cl_2]^+$$ is ____.
  • $$+4$$
  • $$+2$$
  • $$+3$$
  • $$+6$$
The valency of carbon is four. On what principle it can be explained in a better way?
  • Resonance
  • Hybridization
  • Electron transfer
  • None of the above
The units of solubility product of silver chromate $$(Ag_2CrO_4)$$ will be __________.
  • $$mol^2L^{-2}$$
  • $$mol^3L^{-3}$$
  • $$mol L^{-1}$$
  • $$mol L^{-2}$$
The hybridisation of $$S$$ in $$SF_6$$ molecule is
  • $$sp^3$$
  • $$sp^3d^2$$
  • $$sp^3d$$
  • None
What is the proportion of sigma $$(\sigma)$$, and pi $$(\pi)$$ bond in $$1, 4- Benzoquinone$$?
  • $$1 : 3$$
  • $$3 :2$$
  • $$2 : 1$$
  • $$2 : 3$$
The total number of possible isomer for the complex comp. :- $$\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]\left[ {PtC{I_4}} \right]$$
  • 3
  • 6
  • 5
  • 4
The co-ordination number of zinc in zinc blende (Zns) is ___
  • 6
  • 4
  • 8
  • 12
In which of the following octahedral complexes of Co (at no. 27), will the magnitude of $$\triangle _0$$ be the highest?
  • $$[Co(C_2O_4)_3]^{3-}$$
  • $$[Co(H_2O)_6]^{3+}$$
  • $$[Co(NH_3)_6]^{3+}$$
  • $$[Co(CN)_6]^{3-}$$
The total number of possible isomers for the complex compound $$\left[ \mathrm { Cu } ^ { \mathrm { II } } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } \right) \left[ \mathrm { Pt } ^ { \mathrm { II } } \mathrm { Cl } _ { 4 } \right]$$
  • 3
  • 6
  • 5
  • 4
A six coordinate complex of formula $$CrCl_{3} . 6H_{2}O$$ has green colour. A $$0.1\ M$$ solution of the complex when treated with excess of $$AgNO_{3}$$ gave $$28.7\ g$$ of white precipitate. The formula of the complex would be
  • $$[Cr(H_{2}O)_{6})]Cl_{3}$$
  • $$CrCl(H_{2}O)_{5}]Cl_{2}.H_{2}O$$
  • $$[CrCl_{2}(H_{2}O)_{4}]Cl.2H_{2}O$$
  • $$[Cr(H_{2}O)_{3}Cl_{3}]$$
The compound used in the treatment of lead poisoning is :
  • EDTA
  • Cis-platin
  • D-penicillamine
  • desferrioxime B
The unpaired electrons in $$[Ni(CO)_4]$$ are:
  • zero
  • one
  • three
  • four
Which of the following has maximum number of unpaired electron (atomic number of $$Fe\ 26$$)
  • $$Fe$$
  • $$Fe (II)$$
  • $$Fe(III)$$
  • $$Fe(IV)$$
The number of water molecule(s) not coordinated to copper ion directly in $$Cu{SO}_{4}.5{H}_{2}O$$ is:
  • $$4$$
  • $$3$$
  • $$1$$
  • $$2$$
Co-ordination number of central metal atom in $$Na_3[Al(C_2O_4)_3]$$ and $$[Co(en)_2Cl]Cl$$ are:
  • $$6$$ and $$6$$
  • $$6$$ and $$5$$
  • $$5$$ and $$5$$
  • $$6$$ and $$4$$
Which of the following is diamagnetic complex?
  • $$[Co(OX)_{3}]^{3-}, [Fe(CN)_{6}]^{3-}$$
  • $$[Co(Ox)_{3}]^{3-}, [FeF_{6}]^{3-}$$
  • $$[Fe(Ox)_{3}]^{3-}, [FeF_{6}]^{3-}$$
  • $$[Fe(CN)_{6}]^{3-}, [CoF_{6}]^{3-}$$
The primary valency and secondary valency of central metal ion and the no. of total ions produced in aqueous solution for $$K[Co(OX)_{2}(NH_{3})_{2}]$$ complex respectively is ________.
  • $$3, 4, 2$$
  • $$4, 4, 2$$
  • $$3, 6, 2$$
  • $$3, 6, 1$$
$$Cr^+3$$ in aquous medium form green coloured complex with $$NH_3$$ ligand. How many ligand associated 
  • $$3$$
  • $$4$$
  • $$5$$
  • $$6$$
The conductivity measurement of a coordination compound of Cobalt (III) shows that it dissociates into 3 ions in solution. The compound is:
  • Hexaamminecobalt (III) chloride
  • Pentaamminesulphatocobalt (III) chloride
  • Pentaamminechloridocobalt (III) sulphate
  • Pentaamminechloridocobalt (III) chloride
$$[Co(C_{2}O_{4})_{3}]^{3-}$$ is a
  • Low spin complex
  • Paramagnetic
  • High spin
  • $$sp^{3}d^{2}$$ hybridized
After black and white photographic film has been developed, unreacted silver bromide is removed by reaction with sodium thiosulfate.
$$AgBr+2Na_2S_2O_3\rightarrow 4Na^++Br^-+[Ag(S_2O_3)_2]^{3-}$$
What is the function of the thiosulfate ion?
  • To make the silver ions soluble
  • To oxidise the silver ions
  • To reduce the bromine
  • To reduce the silver ions
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