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| List $I$ | List $II$ |
| $A$ van't Hoff factor, $i$ | $I$ Cryoscopic constant |
| $B$ $k _{ f }$ | $II$ Isotonic solutions |
| $C$ Solutions with same osmotic pressure | $III$ $\frac{Normal\,molar\,mass}{Abnormal\,molar\,mass}$ |
| $D$ Azeotropes | $IV$ Solutions with same composition of vapour above it |
Choose the correct answer from the options given below :
Correct order of $pK _{ a }$ value is:
$A$. The strength of anionic ligands can be explained by crystal field theory.
$B$. Valence bond theory does not give a quantitative interpretation of kinetic stability of coordination compounds.
$C$. The hybridization involved in formation of $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ complex is $\mathrm{dsp}^2$.
$D$. The number of possible isomer$(s)$ of cis- $\left[\mathrm{PtCl}_2(\text { en })_2\right]^{2+}$ is one
Choose the correct answer from the options given below: