Chemistry

A Chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of (a) benzanilide, (b) aniline and (c) acetophenone. When the column is eluted with a mixture of solvents, hexane; ethyl acetate $(20:80)$ , the sequence of obtained compounds is

Among the statements $(a-d)$ , the incorrect ones are:

Octahedral $\mathrm{C}\mathrm{o}$ (III) complexes with strong field ligands have very high magnetic moments

When ${\mathrm{\Delta }}_0<\mathrm{P}$ , the d-electron configuration of $\mathrm{C}\mathrm{o}$ (III) in an octahedral complex is ${\mathrm{t}}_{\mathrm{e}\mathrm{g}}^4{\mathrm{e}}_{\mathrm{g}}^2$
Wavelength of light absorbed by ${\left[\mathrm{C}\mathrm{o}(\mathrm{e}\mathrm{n}{)}_3\right]}^{3+}$ is lower than that of ${\left[{\mathrm{C}\mathrm{o}\mathrm{F}}_6\right]}^{3-}$

If the ${\mathrm{\Delta }}_0$ for an octahedral complex of $\mathrm{C}\mathrm{o}$ (III) is $\mathrm{18,000}{\mathrm{c}\mathrm{m}}^{-1}$ , the ${\mathrm{\Delta }}_{\mathrm{t}}$ for its tetrahedral complex with the same ligand will be $\mathrm{16,000}{\mathrm{c}\mathrm{m}}^{-1}$

For the following reactions:

${\mathrm{k}}_{\mathrm{s}}$ and ${\mathrm{k}}_{\mathrm{e}}$ are respectively, the rate constant for substitution and elimination, and $\mu =\frac{{\mathrm{k}}_{\mathrm{s}}}{{\mathrm{k}}_{\mathrm{e}}}$ , the correct option is

The bond order and the magnetic characteristics of ${\mathrm{C}\mathrm{N}}^{-}$ are

In the following reaction sequence, structures of $A$ and $B$ respectively will be

The number of possible optical isomers for the complexes ${\mathrm{M}\mathrm{A}}_2{\mathrm{B}}_2$ with ${\mathrm{s}\mathrm{p}}^3$ and $\mathrm{d}\mathrm{s}\mathrm{p}{\mathrm{p}}^2$  hybridized metal atom, respectively is:
[Note: A and B are unidentate neutral and unidentate monoanionnic ligands, respectively]

Consider the following reactions:

Which of these reactions are possible?

The equation that is incorrect is

In the following reaction sequence

For the reaction

$2{\mathrm{H}}_2\left(\mathrm{g}\right)+2\mathrm{N}\mathrm{O}\left(\mathrm{g}\right)?{\mathrm{N}}_2\left(\mathrm{g}\right)+2{\mathrm{H}}_2\mathrm{O}$ , the observed rate expression is, rate = ${\mathrm{k}}_{\mathrm{f}}[\mathrm{N}\mathrm{O}{]}^2\left[{\mathrm{H}}_2\right]$ . The rate expression for the reverse reaction is: