JEE Main Chemistry question

The boiling points of aldehydes and ketones lie in between alkanes and alcohols of comparable masses because:

(A)Alkanes are non-polar (held by weak van der Waals' forces); aldehydes/ketones have a polar >C=O group held together by dipole-dipole attraction; alcohols have hydrogen bonding, which is stronger than dipole-dipole attractionCorrect
(B)Aldehydes and ketones are non-polar
(C)Alkanes are polar
(D)None of the above

Answer: (A)

Solution

The boiling-point trend (alkanes < aldehydes/ketones < alcohols) follows directly from the strength of the dominant intermolecular

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Question ID VK-149762