The secondary valency of platinum in tetra amminedichloroplatinum (IV) chloride is

• +2

• 3

• 6

• +4

In which one of the pairs of ion given, there is an ion that forms a coordination compound with both aqueous sodium hydroxide and ammonia and an other ion that forms a coordination compound only with aqueous sodium hydroxide?

• Pb²⁺, Cu²⁺

• Zn²⁺, Al³⁺

• Cu²⁺, Zn²⁺

• Al³⁺, Cu²⁺

The IUPAC name of the complex ion formed when gold dissolves in aqua-regia is

• tetrachloridoaurate (III)

• tetrachloridoaurate (I)

• tetrachloridoaurate (II)

• dichloridoaurate (III)

Which of the following will be able to show geometrical isomerism?

• MA₃B - Square planar

• MA₂B₂ - tetrahedral

• MABCD- saquare planar

• MABCD- tetrahedral

The complex formed when Al₂O₃ is leached from bauxite using conc. NaOH solution is,

• Na[Al(OH)₄]

• NaAl₂O₄

• Na[Al(OH)₃]

• Na₂AlO₂

The number of isomers possible for the octahedral complex [CoCl₂(en)(NH₃)₂]⁺ is

• two

• three

• no isomer

• four isomers

The complex ion having minimum magnitude of Δ_° (CFSE) is

• [Cr(CN)₆]^3-

• [Co(CN₃)₆]³⁺

• [Co(Cl)₆]³⁺

• [Cr(H₂O)₆]³⁺

As per IUPAC norms, the name of the complex [Co(en)₂(ONO)Cl]Cl is

• chlorido bis (ethane-1, 2-diamine) nitro-O-cobalt (III) chloride

• chlorido bis (ethylenediamine) nitro-O-cobalt (III) chloride

• chlorido di (ethylenediamine) nitrocobalt (III) chloride

• chloro ethylenediaminenitr-O-cobalt (III) chloride

149.

Square planar complex of the type M_AXBL (where A, B,X and L) are unidenate 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

The formula of potash alum is :

• K₂SO₄.Al₂(SO₄)₃.24H₂O

• K₂SO₄.Al₂(SO₄)₃.18H₂O

• K₂SO₄.(NH₄)₂SO₄.18H₂O

• Na₂SO₄.Al₂(SO₄)₃.24H₂O