Answer:
Acetic acid and hydazine
Explanation:
Hydrogen bonding is weak electrostatic force existing between a hydrogen atom covalently bonded to electronegative atoms and another elcetronegative atom.
Most commonly, compounds having hydrogen bonded to N, F and O atoms show hydrogen bonding.
Hydrogen bonding can be intermolecular and intramolecular.
Among the given option, acetic acid and hydrazine have hydrogen bonding.
Molecular formula of acetic acid is [tex]CH_3COOH[/tex], so only acetic has hydrogen bonded to electronegative atom 'O'.
Molecular formula of acetone is [tex]CH_3COCH_3[/tex]. It has no hydrogen bonded to electronegative atom.
Molecular formula of hydrazine is [tex]N_2H_4[/tex]. In this molecule, hydrogen is bonded to electronegative atom 'N'.
