611.

The complex used as an anti-cancer agent is

• mer-[Co(NH₃)₃Cl₃]

• cis-[PtCl₂(NH₃)₂]

• cis-K₂[PtCl₂Br₂]

• Na₂[CoCl₄]

The colourless species is

• VCl₃

• VOSO₄

• Na₃VO₄

• [V(H₂O)]SO₄.H₂O

Which of the following does not have optical isomer?

• [Co(NH₃)₃Cl₃]

• [Co(en)₃]Cl₃

• [Co(en)₂Cl₂]Cl

• [Co(en)(NH₃)₂Cl₂]Cl

What is the co-ordination number of sodium in Na₂O?

• 6

• 4

• 8

• 2

Assertion : The [Ni(en)₃]Cl₂ (en = ethylene diamine) has lower stability than [Ni(NH₃)₆]Cl₅.

Reason : In [Ni(en)₃]Cl₂ the geometry of Ni is trigonal bipyramidal.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

In the following compound, the number of sp-hybridised carbons are

CH₂ = C = CH - CN(CH) - C ≡ CH

• 2

• 3

• 4

• 5

Which of the following molecule or ions is a bidentate ligand?

• ${\mathrm{C}}_2{\mathrm{O}}_4^{2-}$

• ${\mathrm{Br}}_2^{+}$

• ${\mathrm{CH}}_3{\mathrm{NH}}_2$

• ${\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{N}$

CO is practically non-polar since

• the sigma electron drift from C to O is almost nullified by the pi-electron drift from O to C

• the sigma electron drift from O to C is almost nullified by the pi-electron drift from C to O

• the bond moment is low

• there is a triple bond between C and O

In Cu-ammonia complex, the state of hybridisation of Cu²⁺ is

• sp³

• d³s

• sp²f

• dsp²

What is the correct electronic configuration of the central atom in K₄[Fe(CN)₆] based on crystal field theory

• ${\mathrm{t}}_{2\mathrm{g}}^6{\mathrm{e}}_{\mathrm{g}}^0$

• ${\mathrm{e}}^3{\mathrm{t}}_2^3$

• ${\mathrm{e}}^4{\mathrm{t}}_2^2$

• ${\mathrm{t}}_{2\mathrm{g}}^4 {\mathrm{e}}_{\mathrm{g}}^2$