Inorganic Chemistry PYQ — Page 52

When concentrated $\mathrm{HCl}$ is added to aqueous solution of $CoC{l}_{2}$, its colour changes from reddish pink to deep blue. Which complex ion gives blue colour in reaction?

Which of the following complex ions has electrons that are symmetrically filled in both ${t}_{2g}$ and ${e}_{g}$ orbitals?

The number of geometric isomers that can exist for square planar ${[Pt(Cl)(py)(N{H}_{3})(N{H}_{2}OH)]}^{+}$ is (py = pyridine):

Match the catalysts to the correct process. <table class="pyq-table"><tbody><tr><td></td><td>Catalyst</td><td></td><td>Process</td></tr><tr><td>A.</td><td>$TiC{l}_{3}$</td><td>i.</td><td>Wacker process</td></tr><tr><td>B.</td><td>$PdC{l}_{2}$</td><td>ii.</td><td>Ziegler – Natta polymerisation</td></tr><tr><td>C.</td><td>$CuC{l}_{2}$</td><td>iii.</td><td>Contact process`</td></tr><tr><td>D.</td><td>${V}_{2}{O}_{5}$</td><td>iv.</td><td>Deacon’s process</td></tr></tbody></table>

The cation that will not be precipitated by ${H}_{2}S$ in the presence of dil HCl is:

Which one of the following compounds is not a yellow colored compound ?

In the long form of the periodic table, the valence shell electronic configuration of $5{s}^{2}5{p}^{4}$ corresponds to the element present in:

The shape of $XeO{F}_{4}$ by VSEPR theory is:

The colour of $KMn{O}_{4}$ is due to: [where $\text{M}\rightarrow$ metal, $\text{L}\rightarrow$ ligand]

Molecule AB has a bond length of $1.617 Å$ and a dipole moment of 0.38 D. The fractional charge on each atom(absolute magnitude) is: $({e}_{0}=4.802\times {10}^{-10} esu)$

Chlorine water on standing loses its color and forms:

Which molecule/ion among the following cannot act as a ligand in complex compounds?

An aqueous solution of a salt X turns blood red on treatment with $SC{N}^{-}$ and blue on treatment with ${K}_{4}[Fe{(CN)}_{6}]$ , X also gives a positive chromyl chloride test. The salt X is:

After understanding the assertion and reason, choose the correct option. Assertion: In the bonding molecular orbital (MO) of ${\text{H}}_{2} ,$ electron density is increased between the nuclei. Reason: The bonding MO is ${\text{ψ}}_{\text{A}}+{\text{ψ}}_{\text{B}}$ , which shows destructive interference of the combining electron waves.

The ionic radii $(\text{in} Å)$ of ${N}^{3-}, {O}^{2-}$ and ${F}^{-}$ are respectively:

The correct statement about the magnetic properties of [Fe(CN)$_{6}$]$^{3-}$ and [FeF$_{6}$]$^{3-}$ is : (Z = 26).

The correct order of bond dissociation energy among $\mathrm{N}_2, \mathrm{O}_2, \mathrm{O}_2^{-}$is shown in which of the following arrangements?

Which one of the following molecules is paramagnetic?

An octahedral complex with molecular composition M.5NH$_{3}$.Cl.SO$_{4}$ has two isomers, A and B. The solution of A gives a white precipitate with AgNO$_{3}$ solution and the solution of B gives white precipitate with BaCl$_{2}$ solution .The type of isomerism exhibited by the complex is :

Which of the following series correctly represents relations between the elements from $\mathrm{X}$ to $\mathrm{Y}$ ? $\mathrm{X} \rightarrow \mathrm{Y}$

In the following sets of reactants which two sets best exhibit the amphoteric character of Al$_{2}$O$_{3}$ . xH$_{2}$O ? $\begin{matrix} \text{Set I} & {\text{Al}}_{2} {\text{O}}_{3} \cdot {\text{xH}}_{2} {\text{O}}_{( \text{s} )} + {\text{OH}}_{( \text{aq} )}^{-} \\ \text{Set II} & {\text{Al}}_{2} {\text{O}}_{3} \text{x} \cdot {\text{H}}_{2} {\text{O}}_{( \text{s} )} + {\text{H}}_{2} {\text{O}}_{( \text{l} )} \\ \text{Set III} & {\text{Al}}_{2} {\text{O}}_{3} \text{x} \cdot {\text{H}}_{2} {\text{O}}_{( \text{s} )} + {\text{H}}_{( \text{aq} )}^{+} \\ \text{Set IV} & {\text{Al}}_{2} {\text{O}}_{3} \cdot {\text{xH}}_{2} {\text{O}}_{( \text{s} )} + {\text{NH}}_{ 3 ( \text{aq} ) } \end{matrix}$

Consider the coordination compound, $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_3$. In the formation of this complex, the species which acts as the Lewis acid is:

Which one of the following properties is not shown by NO ?

The octahedral complex of a metal ion ${M}^{3+}$ with four monodentate ligands ${L}_{1},{L}_{2},{L}_{3}\mathrm{and}{L}_{4}$$_{ }$absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is