Match each coordination compound in List-$I$ with an appropriate pair of characteristics from List-$II$ and select the correct answer using the code given below the lists. $\{en = H_2NCH_2CH_2NH_2\}$,atomic numbers:$\{Ti = 22; Cr = 24; Co = 27; Pt = 78\}$
List-$I$ List-$II$
$P$. $[Cr(NH_3)_4Cl_2]Cl$ $1$. Paramagnetic and exhibits ionisation isomerism
$Q$. $[Ti(H_2O)_5Cl](NO_3)_2$ $2$. Diamagnetic and exhibits cis-trans isomerism
$R$. $[Pt(en)(NH_3)Cl]NO_3$ $3$. Paramagnetic and exhibits cis-trans isomerism
$S$. $[Co(NH_3)_4(NO_3)_2]NO_3$ $4$. Diamagnetic and exhibits ionisation isomerism

  • A
    $P-4, Q-2, R-3, S-1$
  • B
    $P-3, Q-1, R-4, S-2$
  • C
    $P-2, Q-1, R-3, S-4$
  • D
    $P-1, Q-3, R-4, S-2$

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In basic medium,the amount of $Ni^{2+}$ in a solution can be estimated with the dimethylglyoxime reagent. The correct statement$(s)$ about the reaction and the product is (are):

Match the following:
Column-$1$ (Reaction)Column-$2$ (Main product)
$A$. $4FeCl_3 + 3K_4[Fe(CN)_6] \rightarrow$$I$. $Fe_4[Fe(CN)_6]_3$
$B$. $ZnCl_2 + 4NaOH \rightarrow$$V$. $Na_2ZnO_2$
$C$. $2FeCl_3 + H_2S \rightarrow$$II$. $FeCl_2$

Match the following Column-$I$ (Reaction) with Column-$II$ (colour of the product or nature):
Column-$I$ (Reaction)Column-$II$ (colour of the product or nature)
$(A)$ $FeCl_3(aq) + NH_3(aq) \rightarrow$$(I)$ Green ppt
$(B)$ $AgCl(aq) + NH_3(aq) \rightarrow$$(II)$ Deep blue
$(III)$ Brown ppt
$(IV)$ Colourless solution

The correct answer for the sequence $(A, B)$ is:

Among the statements $(a)-(d)$,the incorrect ones are:
$(a)$ Octahedral $Co(III)$ complexes with strong field ligands have very high magnetic moments.
$(b)$ When $\Delta_{0} < P$,the $d-$electron configuration of $Co(III)$ in an octahedral complex is $t_{2g}^{4} e_{g}^{2}$.
$(c)$ Wavelength of light absorbed by $[Co(en)_{3}]^{3+}$ is lower than that of $[CoF_{6}]^{3-}$.
$(d)$ If the $\Delta_{0}$ for an octahedral complex of $Co(III)$ is $18,000 \ cm^{-1}$,the $\Delta_{t}$ for its tetrahedral complex with the same ligand will be $16,000 \ cm^{-1}$.

Which of the following statement is/are $TRUE$?

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