Out of TiF₆^2-,CoF₆^3-, Cu₂Cl₂ and NiCl₄^2-(At. no. Z of Ti=22, Co=27, Cu=29, Ni=28), the colourless species are

1. TiF₆^2- and CoF₆^3-

2. Cu₂Cl₂ and NiCl₄^2-

3. TiF₆^2- and Cu₂Cl₂ 

4. CoF₆^3- and NiCl₄^2-

The correct name of the compound [Cu(NH₃)₄](NO₃)₂, according to IUPAC system is:

1. cuprammonium nitrate

2. tetraamminecopper(II)dinitrate

3. tetraamminecopper(II)nitrate

4. tetraamminecopper(I)dinitrate

Ferrocene is :

1. Fe(${\eta }^{\mathit{5}}$-C₅H₅)₂

2. Fe(${\eta }^2$-C₅H₅)₂

3. Cr(${\eta }^{\mathit{5}}$-C₅H₅)₅

4. Os(${\eta }^{\mathit{5}}$-C₅H₅)₂

The ionization isomer of [Cr(H₂O)₄Cl(NO₂)]Cl is:

Among [Ni(CO)₄],[Ni(CN)₄]^2-, [NiCl₄]^2- species, the hybridisation states of the Ni atom are, respectively (At. no. of Ni=28)

1. sp³,dsp².dsp²

2. sp³,dsp²,sp³

3. sp³,sp³,dsp²

4. dsp²,sp³,sp³

The correct order of magnetic moments (only spin value in BM)among is:

1. [Fe(CN)₆]^4->[CoCl₄]^2->[MnCl₄]^2-

2. [MnCl₄]^2->[Fe(CN)₆]⁴>[CoCl⁴]^2-

3. [Fe(Cn)₆]⁴>[MnCl₄]^2->[CoCl₄]^2-

4. [MnCl₄]^2->[CoCl₄]^2->[Fe(CN)₆]^4-

Among the following complexes(K,P),K₃[Fe(CN)₆(k),[Co(NH₃)₆Cl₃(L),Na₃[Co(oxalate)₃](M),[Ni(H₂O)6Cl₂(N),K₂[Pt(CN)₄(O), and [Zn(H₂O)₆(NO₃)₂(P) the diamagnetic complexes are:

1. K,L,M,N

2. K,M,O,P

3. L,M,O,P

4. L,M,N,O

A solution of CuCl in NH₄OH is used to measure the amount of gas by simply measuring change in volume. The gas is

1. CO₂

2. H₂

3. CO

4. All of the above.

Which order is correct in spectrochemical series of ligands?

1. Cl^-<F^-<[C₂O₄]^2-<NO₂^-<CN^-

2. CN^-<[C₂O₄)₂^-<Cl^->NO₂^-<F^-

3. [C₂O₄)^2-<F^-<Cl^->NO₂^-<CN^-

4. F^-<Cl^-<NO₂^-<CN^-<[C₂O₄]^2-

The compound that will exhibit maximum ionic conductivity in aqueous solution is: 

1. K₄[Fe(CN)₆]

2. [Co(NH₃)₆]Cl₃

3. [Cu(NH₃)₄]Cl₂

4. [Ni(CO)₄]