Chemistry - STEREO ISOMERISM Question with Solution | TestHub

In this 1,3-dibromo-2,4-dichlorocyclobutane, inversion through the centre of the ring maps each Br onto the opposite Br and each Cl onto the opposite Cl (up onto down): the molecule has a centre of symmetry and is therefore achiral and optically inactive, even though it has stereocentres.

Ans. (B) No, because it has a centre of symmetry.