What intermolecular forces in ch2ohch2oh?

In CH₂OHCH₂OH (ethylene glycol), the primary intermolecular forces present are hydrogen bonds, due to the hydroxyl (-OH) groups that can both donate and accept hydrogen bonds. Additionally, there are dipole-dipole interactions because of the polar C-O bonds. London dispersion forces also exist, but they are relatively weak compared to the hydrogen bonding in this molecule.