A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of $\left(\mathrm{A}\right)$ benzanilide $\left(\mathrm{B}\right)$ aniline and $\left(\mathrm{C}\right)$ acetophenone. When the column is eluted with a mixture of solvents, hexane:ethyl acetate $\left(20:80\right)$ , the sequence of obtained compounds is:

A dipole moment arises in any system in which there is a separation of charge. They can, therefore, arise in ionic bonds as well as in covalent bonds. Dipole moments occur due to the difference in electronegativity between two chemically bonded atoms.

A bond dipole moment is a measure of the polarity of a chemical bond between two atoms in a molecule. It involves the concept of electric dipole moment, which is a measure of the separation of negative and positive charges in a system.

Hence the sequence of obtained compounds is (C), (A) and (B)