I haven't had a flight review in over ten years but I fly almost every day. Before you get on the phone to the local FSDO to report me for a violation of the regulations remember there are many activities that can substitute for a flight review. I was reminded of this when my friend Rick Felty told me that he did well on his recent BFR.
From strongest to weakest, the intermolecular forces rank in the following way: Strongest: Hydrogen bonding. This occurs when compounds contain O-H, N-H, or F-H bonds. Though referred to as hydrogen bonding, it's not a real bond but just a really strong intermolecular force. Less strong: Dipole-dipole forces. This takes place when polar compounds are attracted to one another. Weakest: London Dispersion Forces.
Here major intermolecular attractive force is hydrogen bonding. The chemicals that exhibit hydrogen bonding, which is a special type of dipole-dipole interactions, are found when you have an H attached to an N, O or F. These are very strong because of the huge differences in electronegativities of the pair, which gives them super strong attractions. To learn more about intermolecular attractive forces visit here