Thank you for reporting, we will resolve it shortly
Q.
$H$-bonding is maximum in
Chemical Bonding and Molecular Structure
Solution:
(a) $CH _3 CH _2- \overset{\delta-}{O} - \overset{\delta+}{H}$ due to polarity there is $H$-bondir
(b) $CH _3- O - CH _3$ no polar hydrogen
(c) $Cl - CH _2- CH _3$ no polar hydrogen $CH _2- CH _3$
(d) $CH _3- CH _2- N$ no polar hydrogen $CH _2- CH _3$
Thus, there is $H$-bonding in ethanol only