Which of the following statements is/are correct ?

Options

A. A meso compound has chiral centres but exhibits no optical activity
B. A meso compounds has no chiral centres and thus are optically inactive
C. A meso compounds has molcules which are superimposible on their mirror image even through they contain chiral centres
D. A meso compound is optically inactive because the rotation caused by any molecule is cancelled by an equal and opposite rotation caused by another molecule that is the mirror image of the first.

Answer

A, C

Explanation

POS or COS may be present
meso are these compounds which was minimum 2-chiral carbon or more and having POS or COS or both. For optical activity two necessary condition us compound must be asymmetric . It POS or COS present then it will super impose on its mirror image.