Chemistry · Chemical Bonding

Due to the presence of methyl groups that bounds to oxygen there is less tendency of hydrogen bonding in ethers.Also, it does not have hydrogen attached to oxygen, so it cannot form hydrogen bonds with itself.

The carboxylic acid, alcohol and water being polar show H-bonding. Option A is correct.

Water molecules form hydrogen bonds as each hydrogen atom is bonded to a highly electronegative oxygen atom, which has lone pairs available for bonding. Therefore, hydrogen bonding is possible. This option is incorrect.

Hydrogen chloride does not typically form hydrogen bonds because the hydrogen is not bonded to a highly electronegative atom with available lone pairs like O, N, or F. However, hydrogen bonds are not as common in this compound, making this an incorrect option for lacking hydrogen bonding.

Acetic acid can form hydrogen bonds due to the presence of a hydroxyl group (OH) where hydrogen is bonded to an electronegative oxygen atom. This allows for hydrogen bonding with itself and other molecules. This option is incorrect.

Dimethyl ether does not have hydrogen atoms bonded to oxygen, nitrogen, or fluorine, which are required for hydrogen bonding. The oxygen atom is attached to carbon atoms, and its lone pairs are not available for hydrogen bonding. Thus, hydrogen bonding is not possible. This is the correct option.