Question

Which of the following is not a necessary condition for the formation of intra-molecular hydrogen bonding?

(a) A 5 or 6-membered ring should be formed

(b) The ring should be planar

(c) There should be minimum strain during the ring closure

(d) There should be maximum strain during the ring closure

The question was asked in an international level competition.

This question is from Intermolecular Forces in section Materials and their Properties of Engineering Chemistry I

Answer 1

Correct choice is (d) There should be maximum strain during the ring closure

The best explanation: The necessary conditions for the formation of intra-molecular hydrogen bonding are:  5 or 6-membered ring should be formed, the ring should be planar and there should be minimum strain during the ring closure.