Which of the following organic compounds could not be dried by anhydrous $CaCl_{2}$?

$A$ mixture of methyl alcohol and acetone can be separated by

How can an organic compound present in an aqueous solution be separated?

Identify the correct statements from the following:
$(i)$ Electromeric effect is a permanent effect.
$(ii)$ Hyperconjugation is a temporary effect.
$(iii)$ Fractional distillation is used to separate two liquids from a mixture if the difference in their boiling points is less.
$(iv)$ Different compounds are adsorbed on an adsorbent to different extents.

The purification method based on the following physical transformation is $:$
$\text{Solid} (X)$ $\xrightarrow{\text{Heat}} \text{Vapour} (X)$ $\xrightarrow{\text{Cool}} \text{Solid} (X)$

Among the following,in which type of chromatography,both stationary and mobile phases are in liquid state?