Question

The boiling point of aldehyde and ketones are:

• A. higher than those of alcohols of similar molecular masses
• B. lower than those of alcohols of similar molecular masses
• C. similar to the alcohols of similar molecular masses
• D. similar to the alcohol of different molecular mass

Answer 1

Answer: (B)

lower than those of alcohols of similar molecular masses

The boiling point of aldehyde and ketones are lower than those of alcohols of similar molecular masses because alcohols can form both inter and intramolecular hydrogen bonding, where the possibility is less for aldehyde and ketones when compared to alcohols.

Option B is correct.