Question

Meso tartaric acid is optically inactive due to the presence of

• A. Plane of symmetry
• B. Molecular asymmetry
• C. External compensation
• D. Two asymmetric C-atoms

Answer 1

The correct option is A Plane of symmetry

Plane of symmetry
Mesotartaric acid is optically inactive beacause of presence of plane of symmetry due to which the optical rotations of upper and lower parts are equal and in the opposite direction which balanced internally and compound become optically inactive.