Q24 / 150 · MHT CET 2025 (26 Apr Shift 1) · Chemistry
Which among the following compounds does NOT form inter molecular hydrogen bonding?
- AEthoxy ethane
- Correct answerBButane
- CPhenol
- DButan-1-ol
Solution
Hydrogen bonding requires both a donor (H bonded to O, N, or F) and an acceptor (lone pair on O, N, or F).
Ethoxy ethane ($\mathrm{CH_3CH_2-O-CH_2CH_3}$) contains oxygen with lone pairs, acting as an acceptor, but lacks an H-donor group.
Butane ($\mathrm{CH_3CH_2CH_2CH_3}$) has no O, N, or F atoms—it cannot donate or accept hydrogen bonds.
Phenol ($\mathrm{C_6 H_5-OH}$) and butan-1-ol ($\mathrm{CH_3CH_2CH_2CH_2 OH}$) both possess -OH groups, enabling donation and acceptance of hydrogen bonds.
Butane is uniquely incapable of intermolecular hydrogen bonding.
Hence, the correct answer is option: 'B'.