GENERAL KNOWLEDGE

Detailed explanation-1: -In N2H4 the nitrogen is highly electronegative and thus is able to form hydrogen bond with itself and other molecules which contain hydrogen atoms bonded to highly electronegative atom.

Detailed explanation-2: -CH₄ does not have any electronegative atom. Therefore it will not form hydrogen bonding.

Detailed explanation-3: -NH3 accepts hydrogen bonds in the complexes H3N-HCN (9), H3N-HF (10), H3N-HOH (11), H3N-HCI (12), H3N-HBr (13), H3N-HCCH (14), H3N-HCF3 (15), and H3N-HSH (16). Because NH3 can serve as a hydrogen-bond acceptor with even the weakest donors, it serves as an ideal calibrant of gas-phase acidities.