Question

Conformations are different arrangements of atoms that can be converted into one another by rotation about ___________

(a) Covalent bond

(b) Double bond

(c) Single bond

(d) Triple bond

I have been asked this question by my school teacher while I was bunking the class.

The doubt is from Conformations topic in division Structure and Stereostructure of Molecules of Engineering Chemistry I

Answer 1

Right answer is (c) Single bond

Easiest explanation: Conformational isomerism is a form of stereoisomerism in which the isomers can be interconverted exclusively by rotations about formally single bonds. Such isomers are generally referred to as conformational isomers or conformers and, specifically, as rotamers.