Optical isomerism is not exhibited by

Options

A. tartaric acid
B. lactic acid
C. succinic acid
D. dibromosuccininc acid

Answer

C

Explanation

Succinic acid `(HO_(2)C CH_(2)CH_(2)CO_(2)H)` does not exhibit optical isomerism because its molecule is achiral due to the presence of a plane of symmetry. On the other hand tartaric acid `[HO_(2)Coverset(**)CH(OH)overset(**)CH(OH)CO_(2)H]` lactic acid `[CH_(2)overset(**)CH(OH)CO_(2)H]`and dibormosuccinic acid `[HO_(2)Coverset(**)CH(Br)overset(**)CH(Br)CO_(2)H]` exhibit optical isomerism as they consist of chiral molecules except the meso configuration.