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Q 1. Chelating ligands among following are:
{tex} \begin{array} { l l } { \text { (i) dien } } & { \text { (ii) } \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } ^ { 2 - } } \\ { \text { (iii) gly } } & { \text { (iv) } \mathrm { py } } \\ { \text { (v) dipy } } \end{array} {/tex}
i, ii, iv, v
i, ii, iii, v
i, ii, iii, iv
i, iii, iv, v
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Q 2. On the basis of sidgwick EAN rule, which of the following statement is not correct?
{tex} \left[ \mathrm { Mn } ( \mathrm { CO } ) _ { 6 } \right] {/tex} can act as reducing agent.
{tex} \left[ \mathrm { V } ( \mathrm { CO } ) _ { 6 } \right] {/tex} can act as oxidising agent.
{tex} \left[ \mathrm { Fe } ( \mathrm { CO } ) _ { 5 } \right] {/tex} can act as both oxidising agent and reducing agent.
{tex} \left[ \mathrm { Mn } ( \mathrm { CO } ) _ { 5 } \right] {/tex} show dimerisation to gain stability.
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Q 3. The IUPAC name for the complex, {tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 2 } \mathrm { Cl } \right (\mathrm{ONO}) \left( \mathrm { P } _ { \mathrm { y } } \right) _ { 2 } ] \mathrm { NO } _ { 3 } {/tex} is:
Diamminechlorido dipyridinenitrito-N-cobaltate (III) nitrate
Diammine chloridonitrito-O-bipyridine cobalt (III) nitrate
Diamminechloridonitrito-O-dipyridine cobalt (III) nitrate
Chloridodiamminenitrito-O-bis(pyridine) cobalt (III) nitrate
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Q 4. Which of the following pairs of name and formula of complexes is not correct?
Tetraamminecopper(II) sulphate {tex} \left[ \mathrm { Cu } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } \right] \mathrm { SO } _ { 4 } {/tex}
Diamminesilver(I) chloride {tex} \left[ \mathrm { Ag } \left( \mathrm { NH } _ { 3 } \right) _ { 2 } \right] \mathrm { Cl } {/tex}
Potassium hexacyanidoferrate(III){tex} [ \mathrm { K } _ { 4 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right]{/tex}
Potassium amminepentachloridoplatinate (IV) {tex}[\mathrm K[ \operatorname { Pt } \left( \mathrm { NH } _ { 3 } \right) \mathrm { Cl } _ { 5 }]{/tex}
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Q 5. Which of the following ligand act as WFL for octahedral complex of {tex} \mathrm { Co } ^ { + 3 } {/tex} ion?
{tex} \mathrm { F } ^ { - } {/tex}
{tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex}
{tex} \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } ^ { - 2 } {/tex}
All of these
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Q 6. A complex has magnetic moment 1.73 BM. Which of the following configuration of metal ion is not possible?
{tex} \mathrm { d } ^ { 7 } , {/tex} octahedral, lowspin
{tex} \mathrm { d } ^ { 5 } , {/tex} octahedral, lowspin
{tex} \mathrm { d } ^ { 8 } , {/tex} square planar
{tex} \mathrm { d } ^ { 9 } , {/tex} tetrahedral
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Q 7. Which follows EAN Rule?
{tex} \left[ \mathrm { Pd } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] \mathrm { Cl } _ { 4 } {/tex}
{tex} \left[ \mathrm { Cr } \left( \mathrm { NH } _ { 3 } \right) _ { 5 } \mathrm { Cl } \right] \mathrm { SO } _ { 4 } {/tex}
{tex} \mathrm { Na } _ { 4 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex}
{tex} \mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex}
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Q 8. {tex} \left[ \mathrm { NiCl } _ { 4 } \right] ^ { - 2 } {/tex} and {tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] ^ { - 2 } {/tex} show similarity in:
Geometry
Magnetic nature
Hybridisation of state of Ni
Primary valency of Ni
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Q 9. The oxidizing agent is:
{tex} \mathrm { Fe } ( \mathrm { CO } ) _ { 5 } {/tex}
{tex} \mathrm { Mn } ( \mathrm { CO } ) _ { 5 } {/tex}
{tex} \mathrm { Mn } _ { 2 } ( \mathrm { CO } ) _ { 10 } {/tex}
{tex} \mathrm { Fe } _ { 2 } ( \mathrm { CO } ) _ { 9 } {/tex}
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Q 10. Inner orbital complex which is paramagnetic in nature?
{tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 5 } \right] ^ { - 3 } {/tex}
{tex} \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] ^ { - 4 } {/tex}
{tex} \left[ \mathrm { Fe } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 5 } ( \mathrm { NO } ) \right] \mathrm { SO } _ { 4 } {/tex}
{tex} \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] ^ { - 3 } {/tex}
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Q 11. VBT can not explain the geometry of:
{tex} \left[ \mathrm { Cr } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { + 3 } {/tex}
{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { + 3 } {/tex}
{tex} \left[ \mathrm { Cu } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } \right] ^ { + 2 } {/tex}
{tex} \left[ \mathrm { Zn } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } \right] ^ { + 2 } {/tex}
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Q 12. Which of the following isomerism is not present in complex {tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } ( \mathrm { SCN } ) _ { 2 } \right] \mathrm { Br } ? {/tex}
Geometrical isomerism
Linkage isomerism
Ionisation isomerism
Optical isomerism
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Q 13. Which of the following is correct order of stability?
{tex} \left[ \mathrm { NiCl } _ { 4 } \right] ^ { - 2 } < \left[ \mathrm { PdCl } _ { 4 } \right] ^ { - 2 } < \left[ \mathrm { PtCl } _ { 4 } \right] ^ { - 2 } {/tex}
{tex} \left[ \mathrm { Co } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { + 3 } < \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { + 3 } < \left[ \mathrm { Co } ( \mathrm { CN } ) _ { 6 } \right] ^ { - 3 } {/tex}
{tex} \left[ \mathrm { Co } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { + 3 } < \left[ \mathrm { Rh } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { + 3 } < \left[ \mathrm { Ir } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { + 3 } {/tex}
All of these
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Q 14. Which is correct statement?
{tex} \left[ \mathrm { Co } ( \mathrm { en } ) _ { 3 } \right] \left[ \mathrm { Cr } ( \mathrm { CN } ) _ { 6 } \right] {/tex} will display coordination isomerism
{tex} \left[ \mathrm { Mn } ( \mathrm { CO } ) _ { 5 } ( \mathrm { SCN } ) \right] {/tex} will display linkage isomerism
{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 5 } \left( \mathrm { NO } _ { 2 } \right) \right] \mathrm { SO } _ { 4 } {/tex} will display ionization isomerism
All are correct
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Q 15. The incorrect statement is:
{tex} \mathrm { Fe } ^ { + 2 } {/tex} salt gives blue colloidal solution with {tex} \mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex}
{tex}FeCl_{3}{/tex} gives red colour with {tex} \mathrm { K } \mathrm { SCN } {/tex}
{tex} \mathrm { Cu } ^ { + 2 } {/tex} salt gives blue colloidal solution with {tex} \mathrm { K } _ { 4 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex}
Light blue solution of {tex} \mathrm { CuSO } _ { 4 } {/tex} turn into dark blue in presence of ammonia.
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Q 16. Which of the following pair contains only ambidenate ligand?
{tex} \mathrm { CN }^{-} , \mathrm { NH } _ { 3 } {/tex}
{tex} \mathrm { NO } _ { 2 } ^ { - } , \mathrm { SCN } ^ { - } {/tex}
{tex} \mathrm { H } _ { 2 } \mathrm { O } , \mathrm { en } {/tex}
en, dien
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Q 17. An example for a double salt is:
Cuprammonium sulphate
Mohr's salt
Potassium ferricyanide
Cobalthexammine chloride
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Q 18. EDTA is a:
Polydenate ligand
Chelating ligand
Flexidenate ligand
All of these
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Q 19. Which can't form chelates?
Didentate ligand
Ambidentate ligand
Tetradentate lignad
Flexidenate ligand
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Q 20. In sodium nitroprusside the oxidation number, coordination number and effective atomic number of iron are respectively:
{tex} + 3,6,35 {/tex}
{tex} + 3,6,36 {/tex}
{tex} + 2,3,36 {/tex}
{tex} + 2,6,36 {/tex}
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Q 21. In the coordination compound, {tex} \mathrm { K } _ { 4 } \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] , {/tex} the oxidation state of nickel is
{tex} - 1 {/tex}
{tex}0{/tex}
{tex} + 1 {/tex}
{tex} + 2 {/tex}
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Q 22. In {tex} \mathrm { Fe } ( \mathrm { CO } ) _ { 5 } , {/tex} the {tex} \mathrm { Fe } - \mathrm { C } {/tex} bond possesses
{tex} \pi {/tex} - character only
both {tex} \sigma {/tex} and {tex} \pi {/tex} characters
ionic character
{tex} \sigma {/tex} -character only.
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Q 23. Coordination compounds have great importance in
biological systems. In this context which of the following statements is incorrect?
Chlorophylls are green pigments in plants and contain calcium.
Haemoglobin is the red pigment of blood and contains iron.
Cyanocobalamine is {tex} \mathrm { B } _ { 12 } {/tex} and contains cobalt.
Carboxypeptidase {tex} \mathrm {-A} {/tex} is an enzyme and contains zinc.
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Q 24. The {tex} \mathrm {IUPAC} {/tex} name for the complex {tex} \left[ \mathrm { Co } \left( \mathrm { NO } _ { 2 } \right) \left( \mathrm { NH } _ { 3 } \right) _ { 5 } \right] \mathrm { Cl } _ { 2 } {/tex} is
nitrito-N-pentaamminecobalt(III) chloride
nitrito-N-pentaaminccobalt(II) chloride
pentaammine nitrito-N-cobalt(II) chloride
pentaammine nitrito-N-cobalt(III) chloride.
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Q 25. The {tex} \mathrm {IUPAC} {/tex} name of the coordination compound {tex} \mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex} is
potassium hexacyanoferrate (II)
potassium hexacyanoferrate (III)
potassium hexacyanoiron (II)
tripotassium hexacyanoiron (II)
