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Q 1. Select the incorrect statement:
Hydrazine can act as bidentate ligand.
Oxalate is a chelating ligand.
All bidentate ligands are chelating ligands.
Number of chelate rings {tex} = {/tex} (denticity {tex} - 1 ) {/tex}
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Q 2. 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 3. 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 4. 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 5. 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 6. Different hydrated isomer of {tex} \mathrm { CrCl } _ { 3 } \cdot 6 \mathrm { H } _ { 2 } \mathrm { O } {/tex} can not be differentiated by:
Conductivity measurements
Precipitation by {tex}AgNO _ { 3 } {/tex}
Dipole moment
Magnetic moment
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Q 7. The complex ion {tex} \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] ^ { 4 - } {/tex} contains:
total of 36 electrons on {tex} \mathrm { Fe } ^ { 2 + } {/tex} cation
{tex} \mathrm { sp } ^ { 3 } \mathrm { d } ^ { 2 } {/tex} hybrid orbitals with octahedral structure
Twelve coordinate bonds
six sigma bonds
