A complex compound is formed by ligands nitrate and chloride. It gives two moles of AgCl precipitate with $AgN{O}_3$. What will its formula be? 

1. $\left[Co{\left(N{H}_3\right)}_{5}N{O}_3\right]C{l}_2$

2. $\left[Co{\left(N{H}_3\right)}_{5}Cl\right]N{O}_{3}Cl$

3. $\left[Co{\left(N{H}_3\right)}_{4}C{l}_2\right]N{O}_3$

4. $[Co{\left(N{H}_3\right)}_{4}ClN{O}_3]Cl$

$[Cu{\left(N{H}_3\right)}_4{]}^{+2}$ reacts with $HN{O}_3$ in excess of water and gives: 

1. $Cu{\left(OH\right)}_2$

2. $Cu{\left(N{O}_3\right)}_2$

3. $Cu{\left(H_{2}O\right)}^{-2}$

4. None of the above 

The coordination number of Ni in ${\left[\mathrm{Ni}\right({\mathrm{C}}_2{\mathrm{O}}_4{)}_3]}^{4-}$ is:

The complex 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]

The hypothetical complex
chlorodiaquatriamminecobalt(III) chloride can be
represented as:

1. $\left[\mathrm{CoCl}{\left({\mathrm{NH}}_3\right)}_3{\left({\mathrm{H}}_2\mathrm{O}\right)}_2\right]{\mathrm{Cl}}_2$

2. $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3\left({\mathrm{H}}_2\mathrm{O}\right){\mathrm{Cl}}_3\right]$

3. $\left[\mathrm{Co}{\left({\mathrm{NH}}_2\right)}_3{\left({\mathrm{H}}_2\mathrm{O}\right)}_2\mathrm{Cl}\right]$

4. $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3{\left({\mathrm{H}}_2\mathrm{O}\right)}_3{\mathrm{Cl}}_3\right]$

CuSO₄ when reacts with KCN forms CuCN, which is insoluble in water.
It is soluble in excess of KCN, due to the formation of the following complex:

1. K₂[Cu(CN)₄]

2. K₃[Cu(CN)₄]

3. CuCN₂

4. Cu[KCu(CN)₄]

According to IUPAC nomenclature, sodium nitroprusside is named as:

1. Sodium nitro ferricyanide

2. Sodium nitro ferrocyanide

3. Sodium pentacyanidonitrosyl ferrate(II)

4. Sodium pentacyanonitrosyl ferrate(III)